Contains original and blueprint engineering drawings of cable car lines, electric railways, railroads, and other related drawings. Cable car drawings include drawings of the complete workings for 7 cable car lines for Market Street Cable Railway Co. Railroad drawings include drawings of bridges and profiles of sections of the Atlantic & Pacific Railroad. The collection also includes L.M. Clement's reference materials and some of R.M. Clement's personal papers.

Lewis Metzler Clement, known as L.M. Clement, was born in Niagara-on-the-Lake, Ontario, Canada, on August 12, 1837. Clement earned an engineering degree from Montréal's McGill University. Clement began his career with the railroads as a shipping clerk with the Central Ohio Railroad, eventually moving to St. Louis where he worked for E.R. Blanchard, General Freight Agenet of the Ohio and Mississippi Railway Company. In January 1863, Clement decided to leave St. Louis to seek his fortune in California. With a recommendation from Blanchard, he was able to secure a position from Theodore Dehone Judah, Chief Engineer of the Central Pacific Railroad, as Judah's assistant in the surveying and building of the first railroad eastward across the Sierra Nevada Mountains. With Judah's death, Clement was made Assistant Chief Engineer and eventually the Acting Chief Engineer.Russell Montague Clement, known as R.M. Clement, son of Lewis Metzler Clement, was born March 30, 1865 in a camp along the Central Pacific Railroad line. Russell studied civil engineering at Massachusetts Institute of Technology, graduating in 1889. He worked for both the Southern Pacific Railroad and the Pacific Improvement Company and later served as the City Engineer for Oakland, California. R.M. Clement died in 1958.The Market Street Railroad Company, incorporated in 1857 was the first street railway system in San Francisco with tracks going down Market Street. Originally operated with steam dummy's pulling the cars, they were switched to horse drawn cars in 1867 after complaints from residents.

Number of containers: 8 boxes, 2 oversize boxes, 36 oversize folders, 4 v. and 2 oversize v.

Linear feet: 5.5

Copyright has been assigned to The Bancroft Library. All requests for permission to publish or quote from manuscripts must be submitted in writing to the appropriate curator or the Head of Public Services for forwarding. Permission for publication is given on behalf of The Bancroft Library as the owner of the physical items and the copyright.

Collection is open for research.