The series consists of historical accounts of Davidson and his family, copies of testimonials (references) for Davidson and other miscellaneous material.

Series consists of files that contain correspondence and also some other material. As this material arrived in no discernable order, the files have been arranged alphabetically by the topic assigned by Davidson.

The fonds consists of biographical material (1901-1987), teaching material (1899-1948), publications (1913-1949), lectures (1919-1945), journals/notebooks (1911-1948), correspondence/ subject files (1912-1962), Vancouver Natural History Society material (1927-1941), printed material and photographs (1919-1949).

The series consists of daily journals (1912, 1917-1920) and notebooks chronicling Davidson's various trips (1911-1936).

The series consists of Davidson's lectures, copies of some lectures, and associated correspondence.

Series consists of eighteen photographs of various groups of people or botanical specimens.

Series consists of printed and published material relating to botany collected by Davidson.

Series consists of copies of Davidson's publications.

Series consists of copies of examinations, lecture notes, course outlines, student lists for botany courses taught by Davidson.

Series consists primarily of correspondence (1923-1935) and camp records (1921-1941) of the Vancouver Natural History Society.