The Plant World Vol IX 1906 * The Wildflower Preservation Society * sample image * 1906
The Plant World Vol X 1907 * The Wildflower Preservation Society * sample image * 1907
The Plant World Vol XI 1908 * The Wildflower Preservation Society * sample image * 1908
The Plant World Vol XIII 1910 * The Wildflower Preservation Society * sample image * 1910
The Plant World Vol XIV 1911 * The Wildflower Preservation Society * sample image * 1911
How to draw & ink trees & shrubs in silhouette * Ehrlich, Frederic * sample image * 1931
The Plant World Vol XV 1912 * The Wildflower Preservation Society * sample image * 1912
The Plant World Vol XVII 1914 * The Wildflower Preservation Society * sample image * 1914
The Plant World Vol XVII 1915 * The Wildflower Preservation Society * sample image * 1915
The Plant World Vol XIX 1916 * The Wildflower Preservation Society * sample image * 1916
Flora Costaricensis No. 13 * Burger, William (editor) * sample image * 1983
Flora Costaricensis No. 23 * Burger, William (editor) * sample image * 1990
Flora Costaricensis No. 28 * Burger, William (editor) * sample image * 1991
Flora Costaricensis No. 33 * Burger, William (editor) * sample image * 1993
Flora Costaricensis No. 35 * Burger, William (editor) * sample image * 1971
Flora Costaricensis No. 36 * Burger, William (editor) * sample image * 1995
Flora Costaricensis No. 40 * Burger, William (editor) * sample image * 1977
Flora Costaricensis No. 40 * Burger, William (editor) * sample image * 1999
Flora Costaricensis No. 41 * Burger, William (editor) * sample image * 2000
Flora Costaricensis No. 45 * Burger, William (editor) * sample image * 2005