Use for: view camera, cameras, field, cameras, view, cameras, flatbed, field cameras, flatbed cameras , technical cameras

Use for: century, twentieth (dates CE), 20th century (dates CE) , 20th-century (dates CE), 1900s

• Century in the proleptic Gregorian calendar including the years 1900 to 1999 (or 1901 to 2000).

• Structures of any kind that serve the transportation and transport of goods and passengers.

Use for: transportation complex , complexes, transportation

• Buildings or complexes providing transportation facilities or otherwise serving transportation needs.

• Techniques where images or designs are transferred from one material to another.

Use for: railroad trains, railway trains , trains, railroad, trains, railway

• Two or more rail transit vehicles physically connected and operated as a unit.

Use for: traced

• Copying from an original by drawing over it onto a transparent or translucent piece of paper, cloth, or other material.

Use for: town house, houses, town, houses, urban, townhouses, urban houses

• Use only for individual freestanding urban dwellings. For attached urban dwellings each having its own private entrance, use

Use for: tissue stereographs

• Refers to double pictures of the same scene that produce the effect of three dimensionality when viewed through a stereoscope. They were first envisioned in 1832 by the English physicist Charles Wheatstone, who described this as a uniquely photographic art form, since a draftsman could not draw two scenes in exact perspective from viewpoints separated only 2 1/2 inches, which is the normal distance between human eyes necessary for the three-dimensional effect. Wheatstone's mirror stereoscope was not practical for use with photographs, and the invention was not popular until the 1850s, when Sir David Brewster, a Scottish scientist, designed a simpler viewing instrument. The introduction of the collodion process, which simplified exposure and printing techniques, allowed three-dimensional photographs to become a popular craze. They may be daguerreotypes, negatives, or other forms of photographs. For images in the form of photographic prints on cards, use the more specific term

Use for: stereoscope , stereo viewer (card type), stereoviewer, stereocard viewer

• Viewers in which pairs of stereoscopic images are mounted and appear as a single, three-dimensional image when viewed. Use for objects designed to view individual stereo cards, usually photographic prints. For the devices used to view wheels of mounted transparencies, marketed as a children's toy from the mid-20th century, use

Use for: special library (building), libraries, special (buildings)

• Buildings housing privately owned libraries established to meet the needs of the members or staff of the owning institution.

Use for: skyscraper, blocks, tower, buildings, high, buildings, tall, high buildings, tall buildings, tower blocks

• Exceptionally tall buildings of skeletal frame construction.

• Single structures in the built environment.