Map of the Forest Hill Divide, Placer County, California : based upon surveys and examinations by Ross E. Browne ; drawn by John D. Hoffmann, 307 Sansome St., S.F.
MLA
Hoffmann, John D., and draughtsman. Map of the Forest Hill Divide, Placer County, California : Based upon Surveys and Examinations by Ross E. Browne ; Drawn by John D. Hoffmann, 307 Sansome St., S.F. California State Mining Bureau?], 1890. https://collections.library.yale.edu/catalog/15821454.
APA, 6th edition
Hoffmann, J. D., & draughtsman. (1890). Map of the Forest Hill Divide, Placer County, California : based upon surveys and examinations by Ross E. Browne ; drawn by John D. Hoffmann, 307 Sansome St., S.F. [Maps]. California State Mining Bureau?], https://collections.library.yale.edu/catalog/15821454.