The University of Michigan, an encyclopedic survey ... Wilfred B. Shaw, editor.
University of Michigan.

Bartlett, Harley H. MS, "The Botanical Gardens of the University of Michigan, 1897-1937." Univ. Mich.
Bartlett, Harley H."A University Expedition in Mexico. The Michigan Botanical Expedition for 1934."Mich. Alum. Quart. Rev., 41 (1935): 357-58.
Flook, Lyman R., , and Henry A. Gleason. "The University's Botanical Garden."Mich. Alum., 23 (1917): 460-63. Contains perspective sketch and ground plan of the greenhouses, as originally proposed and approved.
Gager, C. Stuart. "Botanic Gardens of the World: Materials for a History."Brooklyn Botanic Garden Record, 27 (1938): 151-406.
Gray, Asa. Letters of Asa Gray. Ed. by Jane Loring Gray. London: Macmillan and Co., 1893.
[Hale, William J.]"Bibliography."In Edward D. Campbell, History of the Chemical Laboratory of the University, 1856-1916. Ann Arbor: Univ. Mich., 1916.
Newcombe, Frederick C."The New Botanic Garden."Mich. Alum., 13 (1906): 99-102.
Newcombe, Frederick C."A Quarter Century of Botany at Michigan."Mich. Alum., 21 (1915): 477-80.
[News notes.]Mich. Alum., 5 (1899): 290;Page  512 19 (1912): 108; 20 (1913): 64; 20 (1914): 302.
President's Report, Univ. Mich., 1853-1940.
Proceedings of the Board of Regents …, 1864-1940 (especially 1899-1940). (R.P.)
[Robbins, Frank E.]"An Earlier Campus Plan."Mich. Alum., 29 (1923): 793-95.
Robbins, Frank E."Asa Gray's Visit to Ann Arbor."Mich. Alum., 36 (1930): 483-84.
[Schlotterbeck, Julius O.]"The Botanical Garden at the University."Phi Chi Communicator [Ann Arbor], 11 (June, 1899): 1-2.
[Schlotterbeck, Julius O.]"A University Arboretum."Univ. Newsetter, No. 25 (1899), suppl.
[Schlotterbeck, Julius O.]"Will Grow Its Own Plants."Univ. Newsetter, No. 36 (1899).
Spaulding, Volney M., , and Frederick C. Newcombe. "Needs of the University. III. A Botanical Garden."Univ. Newsletter, No. 51 (1900).
Tealdi, Aubrey. "The University Arboretum: a Beautiful Setting for the Study of Plant Life."Mich. Alum., 28 (1922): 713-17.
U. of M. Daily, Apr. 24, 1900.
University of Michigan Regents' Proceedings, 1837-1864. Ed. by Isaac N. Demmon. Ann Arbor: Univ. Mich., 1915.