Antique Books Pittsburgh
The Historic Pittsburgh Book Collection contains publications from Antique Books Pittsburgh the nineteenth and early twentieth centuries that document Pittsburgh-area history and culture. It is an attempt at providing a unique overview to Antique Books Pittsburgh local Pittsburgh and western Pennsylvania history by exploring social issues, personalities, communities, religions, industries and landmarks that make up the history and Antique Books Pittsburgh Antique Books Pittsburgh the culture of the Pittsburgh region from the Colonial Period through World War II.
Most of the materials in Historic Pittsburgh Book Bookss were published or produced before the early s and are out of print or not readily accessible. These materials cover the growth and development of Pittsburgh and the surrounding Western Pennsylvania antique books pittsburgh from the period of exploration and settlement through the antique books pittsburgh revolution to the Great Depression. Read more Items that offer information thought to be, or pittsbugh approximate, primary antqiue materials are given priority over items considered to be interpretive history.
The collection also includes representative works of the general pittsbuggh Antique Books Pittsburgh of Pittsburgh. It should be understood that Historic Pittsburgh does not represent a complete body of work that covers the entire history of the angique, but rather an informed selection of materials that should serve to introduce and antique books pittsburgh in the scholarly study of Pittsburgh and the surrounding Western Pennsylvania area.
Because most of the items selected for the Historic Pittsburgh Book Ahtique were published antiqeu the early s, they antique books pittsburgh the attitudes and beliefs -- the historical context -- of the time Antique Books Pittsburgh in which pitgsburgh were produced.
Certain materials in the collection may be offensive to some readers. The user should keep in mind Pittsburgh Books Antique the historical context of the material when searching antique books pittsburgh information. The user also should be aware of the antlque that Antique Books Pittsburgh there will be variations in spelling and meaning for example, the use of native Americans in early published works generally refers to Antique Books Pittsburgh the Caucasian people who settled in America, rather than the native American Pittsbufgh tribes.
Some of the original source materials used Antique Books Pittsburgh Antique Books Pittsburgh for Historic Pittsburgh antiquw have marginalia, torn pages, or other physical defects which appear on the digital images. Every effort possible has Antique Books Pittsburgh been made to maintain the integrity and pittsburgu antique books pittsburgh completeness of each item.
In some cases, though, an item with antique books pittsburgh missing information may be included in antique books pittsburgh collection because its content has significant research value. Contact Us. Home Antique Books Pittsburgh � Historic Pittsburgh Antique books pittsburgh Collection.
Description The Historic Pittsburgh Book Collection comprises published material from the 19th and 20th centuries that document Pittsburgh in the printed word.
Depositor University of Pittsburgh. Reddit Twitter Facebook. It is an attempt at providing a Antique Books Pittsburgh Antique Books Pittsburgh unique overview to local Pittsburgh antique books pittsburgh western Pennsylvania history by exploring social issues, personalities, communities, religions, industries and landmarks Antique Books Pittsburgh that booka up the history and the culture of the Pittsburgh region from the Colonial Period through World War II About the Historic Pittsburgh Books Most of the materials in Historic Pittsburgh Book Collection were published or produced before the early s and are out of print or not readily accessible.
Search terms. Sort Title Bbooks Identifier Creator. Filter Results Date - Highlights on housing in Pittsburgh and Allegheny County. PennsylvaniaPittsburgh. Historic Pittsburgh Book Collection. University of Pittsburgh. Sisters of the Holy Ghost Pittsburgh, Pa. Madonna del Castello Antique Books Pittsburgh Church: Pittsburgh, Pennsylvania.
Madonna del Castello Church Swissvale, Pa. Swissvale Pa. Tree of Life Synagogue: dedication book. Pittsburgh Chapter bulletin. PennsylvaniaPittsburghPennsylvaniaPittsburgh. The Antique Books Pittsburgh Footprints of mercy, Southwestern Pennsylvania in song and story: with notes and illustrations. PennsylvaniaPennsylvania. Under the red patch: story of the Antique Books Pittsburgh Sixty third regiment, Antique books pittsburgh volunteers, United States.
Official publication of the West Homestead, Pennsylvania 50th Anniversary Celebration, held antique books Antique Books Pittsburgh pittsburgh the week of July 15 to 22, The Catalogue of the Catalogue of the State-book of Pennsylvania: containing an account of Antique Books Pittsburgh the geography, history, government, resources, and noted citizens of the state : with a map of the state and of each county : for the use of schools.
The courts of antique books pittsburgh bench and bar of Washington County, Pennsylvania: with sketches of the Antique Books Pittsburgh Antique Books Pittsburgh early court-houses, the judicial system, the law judges, and the roll of attorneys of that county : and a history of the erection and dedication of antique books pittsburgh court-house antiique : with portraits and illustrations. Washington County Pa. Manual and directory of Smithfield St. Church Antique Books Pittsburgh Antique Books Pittsburgh for containing full account of the centennial celebration of Pittsburgh Methodism, held in the Smithfield St.
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More stations opened in cities across Antique Books Pittsburgh North America in the following years and radio ownership steadily gained in popularity.
Radio sets from before are rarities, and are Antique Books Pittsburgh Books Pittsburgh Antique Antique Books Pittsburgh probably military artifacts. Sets made prior to approximately were usually made on wooden breadboards , in small cupboard style cabinets, or sometimes on an open sheet metal chassis. Homemade sets remained a strong sector of radio production until the early s.
Until then there were Antique Books Pittsburgh more homemade sets Antique Books Chicago in use than commercial sets. These basic radios used no battery , had no amplification and could operate only high-impedance Antique Books Pittsburgh headphones. They would receive only very strong signals from a local station. They were popular among the less wealthy due to their low build cost and zero run cost.
Crystal sets had minimal ability to separate stations , and where more than one high power station was present, inability to receive one without the other was a common problem. Some crystal set users added a carbon Antique Books Pittsburgh amplifier or a mechanical turntable amplifier to give enough output to operate a speaker. Some even used a flame amplifier. Tuned radio frequency sets TRF sets were the most popular class of early radio , primarily because the Radio Corporation of America RCA had a monopoly on the superheterodyne circuit patents and it was more profitable for companies to jump into radio manufacturing TRF sets.
These used Antique Books Pittsburgh several valves tubes to provide RF amplification, detection, and audio amplification. Early TRF sets only operated headphones , but by the mids Antique Books Pittsburgh Antique Books Pittsburgh it was more common to use additional amplification to power a loudspeaker , despite the expense.
The sound quality produced from "moving-iron" speakers Antique Books Pittsburgh Antique Books Pittsburgh used on such sets is sometimes described as torturous, although by the late s the Kellogg-Rice dynamic moving-coil speaker had begun to Antique Books Pittsburgh find favor due to its superior sound-reproduction ability.
Speakers widely used on TRF sets included:. TRF sets used no regeneration , and were Antique Books Pittsburgh merely several stages typically three of tuned RF amplifiers in series feeding a detector tube which extracted the audio intelligence from the Antique Books Pittsburgh RF signal. TRF sets, depending on the number of stages they employed, could have poor-to-superb sensitivity ability of the set to pick Antique Books Pittsburgh up faint signals and corresponding selectivity ability to parse adjacent stations from one another.
Audio reproduction quality of TRF sets was Pittsburgh Books Antique limited by the available loudspeakers. Reaction sets , also known as regenerative receivers, rely on positive feedback to achieve adequate gain. This approach Antique Books Pittsburgh provided high performance with a minimum number of expensive vacuum tubes, but these receivers tended to radiate RF interference in their immediate vicinity.
Consequently, there was a significant amount of hostility by neighbors of "regen" set users over maladjusted radios transmitting squealing noises and Antique Books Pittsburgh blocking reception on nearby properties.
Early TRF sets had typically two or three tuning knobs and tube filament voltage-control rheostats, all of Antique Books Pittsburgh which had to be set correctly to receive a station. Later late s TRF sets had ganged tuning one knob was used to control all stage tuning capacitors simultaneously , AC house current operation, and eliminated the filament voltage adjustments. All of these changes Antique Books Pittsburgh greatly simplified operation and made radio a household appliance that even a small child could operate, instead of the highly skilled hobbyists of the brief preceding generation.
Reaction sets Antique Books Russian also had the filament adjustment rheostats for each valve , and again settings had to be Antique Books Pittsburgh right to achieve reception. In the era of early radio, only RCA and a select number of competing "prestige" radio manufacturers could Antique Books Buyers Near Me Antique Books Pittsburgh Books Pittsburgh Antique Antique Books Pittsburgh afford to build a superheterodyne receiver superhet. RCA had exclusive rights to the superheterodyne circuit patents and extracted high licensing fees Antique Books Pittsburgh from other companies who sought to build superhet sets.
RCA also vigorously prosecuted patent infringers. This situation helped propel RCA to the Antique Books Pittsburgh forefront of radio manufacturers in the s due to the higher efficiency of the superhet circuit- a situation which lasted until the patents expired in the early s, at which time a flood of low-cost superheterodyne receivers hit the market.
Early RCA-patent-era superhets were often used with the relatively expensive moving coil speakers , which offer a quality of sound unavailable from moving iron speakers. Most post commercial radios were superhets, and this technology is still in widespread use in radio receivers today, implemented with transistors or integrated Antique Books Pittsburgh Antique Books Pittsburgh circuits.
In general the technical and manufacturing advantages of the superhet ensured that the TRF set became quickly obsolete once the patent restrictions on superhets were eliminated. Prior to the Rural Electrification Act of , the vast majority of rural farms in America did not have electricity. Many rural areas of the Midwest and South did not receive commercial power until the s.
Until that point, special Antique Books Pittsburgh Antique Books Pittsburgh radios were made to run on DC power. The earliest so-called "farm radios" used the "A", "B", and "C" batteries typical of s radio sets; these farm radios were identical to those used in cities. Somewhat later, farm radios were made to be run on 6 volts from a car or tractor battery, using an electromechanical vibrator to create a pulsating DC current that could Antique Books Pittsburgh Antique Books Pittsburgh Antique Books Pittsburgh be stepped up though a transformer to create the high voltage needed for the plates of the tubes- exactly as contemporary car Antique Books Pittsburgh Antique Books Pittsburgh radios did.
Other farm radios were designed to run on 32 volts DC, from a bank of lead-acid storage batteries charged from Antique Books Pittsburgh a gas powered generator or a wind-charger. The volt system could also power other specially made appliances as well as electric lights around the farm. Other farm radios, especially from the late s to the s, reverted to using a large "A-B" dry cell Antique Books Pittsburgh that provided both 90 volts for the tube plates and 1.
World War 2 created widespread urgent need for radio communication, and foxhole sets were built by people without access to traditional radio parts.
A foxhole radio is a simple crystal sets radio Antique Books Pittsburgh receiver cobbled together from whatever parts one could make which were very few indeed or scrounged from junked equipment.
Such a set Antique Books Pittsburgh typically used salvaged domestic wiring for an antenna, a double-edged safety-razor blade and pencil lead or bent safety-pin for a detector, and Antique Books Pittsburgh a tin can, magnet and some wire for an earpiece. Razor blades of the era were chemically coated "blued" and this coating Antique Books Pittsburgh Antique Books Pittsburgh could function as a diode, in the same way that a galena-catwhisker detector operates.
The console radio was the center piece Pittsburgh Books Antique Books Pittsburgh Antique of household entertainment in the era of radio. They were big and expensive, costing hundreds of dollars in the late s and Books Pittsburgh Antique were often coupled with a phonograph.
Tending to be a major acquisition for a middle-class family, these large radios were usually placed in living rooms. Sale Photo Gallery. Sale Photo Gallery! If not, we Antique Books Melbourne highly recommend it. It was printed in limited quantities and Antique Books Pittsburgh someday will surely be hard to find.
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