Bulletin of popular information - Arnold Arboretum, Harvard University.

no.1-63 (1911-1914); no.19-63 1912-14; no.19-no.21,no.24-no.26,no.28-no.31,no.34-no.36,no.40-no.42,no.47-no.50,no.53,no.60-no.61,no.63 1912/1914; v.1-63(1911-1914); new ser.:v.1 (1915); n.s. v.1-2 1915-1916; new ser.:v.2 (1916); new ser.:v.3 (1917); v.1-4 1915-18; v.3-4 (1917-1918); v.1-4(1915-1918); new ser.:v.4 (1918); no.1-63 (May 2, 1911-Nov. 10, 1919); new ser.:v.5 (1919); v.5-6 (1919-1920); new ser.:v.6 (1920); new ser.:v.7 (1921); v.5-8(1919-1922); new ser.:v.8 (1922); v.5-9 1919-23; ser. 3 v.1-2; ser. 3 v.3-4; ser.3 v.4 1930 no.1; ser.3:v.1-6 1927-1932; ser. 3 v.5-6; ser.4 v.4 no.1-4; ser.4 v.5-8 (1937-40); ser. 4 v.7-8