Lantern slides relating to various engineering and mining subjects.

This collection consists of materials documenting the history of electron optics, especially electron microscopes. Included are engineering drawings of Marton's devices, designed in Belgium, Stanford and RCA in the 1930s and 1940s; notebooks concerning extensive investigations in electron microscopy; photographs and micrographs concerning developm...

Collection consists of lantern slides and stereographs produced by several companies: Keystone View Company, Better America Lecture Service, Incorporated, American Press Association, J. Stanley-Brown, William H. Rau, and J. F. Maertz Department Store. The lantern slides were primarily intended to be used for educational presentations about the United States, other countries, history, and society. Many of the slides and stereographs are accompanied by descriptive text and in some instances by small cards--one card for each slide--and in other instances directly on the back of a stereoview. The majority of images were taken from 1900 to 1930.

The collection documents the technology of lighting and various business aspects of the General Electric Lighting Division throughout the 20th century and consists of correspondence, bulletins, price lists, business record books, stock certificates, sales and advertising materials, scrapbooks, photographs, and lantern slides.

The collection consists of approximately .25 cubic feet of correspondence, pamphlets, photographs, and books documenting Charles Came. The bulk of the collection consists of correspondence from Charles Came to his second wife, Cynthia (Chadwick) Came which were written during his travels throughout upstate New York. The correspondence is not incl...

The Thomas Warren Sears Photograph Collection documents examples of the design work of Thomas Warren Sears (1880-1966), a landscape architect and amateur photographer from Brookline, Massachusetts. Sears, who was based for most of his career in Philadelphia, designed a variety of different types of landscapes ranging from private residences, schools, and playgrounds to parks, cemeteries, and urban housing developments located primarily in Pennsylvania, Maryland, and New York. In addition to some of Sears' design work, images in the collection document Sears' domestic and foreign travels, design inspirations, and family. The collection includes over 4,800 black and white negatives and glass lantern slides dated circa 1899 to 1930. While most images show private and public gardens, there are a significant number of unidentified views and views photographed in Europe during two trips he took there in 1906 and 1908. Few images are captioned or dated. In addition, there are over 50 plans and drawings, most notably for Balmuckety in Pikesville, Maryland and Reynolda in Winston-Salem, North Carolina, and 3 monographs by or about Sears.

The J. Horace McFarland Collection includes over 3,100 photographic images of private and public gardens throughout the United States, as well as some from foreign countries, dating from 1899 to 1963. Many of these images, generated for Mount Pleasant Press (later the J. Horace McFarland Company), were used to illustrate trade catalogs published by the firm as well as journal and newspaper articles. The collection also contains color records that were used as reference aids during the printing process, plant patents, and various publications of the McFarland Company.

The collection is comprised of the results of Shanks's research on covered bridges, mostly in America but also covered bridges in Canada and Switzerland. Included are albums containing color photographs of covered bridges, slides of covered bridges, postcards depicting covered bridges; maps, and guidebooks; newsletters, magazines, and newspaper clippings on the subject of covered bridges.

This collection contains over 37,000 35mm slides, 3,000 glass lantern slides and garden files that may include descriptive information, photocopied articles (from journals, newspapers, or books), planting lists, correspondence, brochures, landscape plans and drawings. Garden files were compiled by Garden Club of America (GCA) members for most of the gardens included in the collection. Some gardens have been photographed over the course of several decades; others only have images from a single point in time. In addition to images of American gardens, there are glass lantern slides of the New York Flower Show (1941-1951) and trips that GCA members took to other countries, including Mexico (1937), Italy, Spain, Japan (1935), France (1936), England (1929), and Scotland. A number of the slides are copies of historic images from outside repositories including horticultural and historical societies or from horticultural books and publications. The GCA made a concerted effort in the mid-1980s to acquire these images in order to increase its documentation of American garden history. Because of copyright considerations, use of these particular images may be restricted.

The records document the work of consulting engineers and bridge builders, Ralph Modjeski (1861-1940) and Frank Masters (1883-1974) of Harrisburg, Pennsylvania.