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Robertson, Colin Charles, 1884-1946. Tour of C. C. R. across the American continent [diary], 1906 June-October.

Title: Tour of C. C. R. across the American continent [diary], 1906 June-October.

During the course of a research trip into Mexico in the summer and fall of 1906, Robertson kept a diary account documenting his travels to the Pacific Coast from New Haven across Canada, south from Vancouver to Los Angeles and on into Mexico from the American Southwest.

ArchivalResource: 2 vols., 10 x 15 cm.

http://www.worldcat.org/oclc/122386590 View

Robertson, Colin Charles, 1884-1946. Notes on the trees of extra-tropical Mexico [master's thesis], 1907.

Title: Notes on the trees of extra-tropical Mexico [master's thesis], 1907.

As part of his Yale education, Robertson researched and wrote a master's thesis on various aspects of Mexico's native vegetation.

ArchivalResource: 1 volume.144 pages.27 cm.

http://www.worldcat.org/oclc/122510183 View

Robertson, Colin Charles, 1884-1946. Photographs of scenes in Mexico, 1906.

Title: Photographs of scenes in Mexico, 1906.

Four photographs taken while researching his master's thesis in Mexico in 1906, including two views of the peaks of the Pachuca Mountains in Hidalgo province, one street scene in the city of Chihuahua, and one photograph of the botanist Cyrus G. Pringle.

ArchivalResource: 4 photographs.9x13 cm.

http://www.worldcat.org/oclc/122332635 View