Notes on tulip species.
By the late W.R. Dykes. Ed. and illustrated by E. Katherine Dykes, with an introduction by Sir A. Daniel Hall.
- London, H. Jenkins, limited [1930]
- 108 p. LIV col. pl. 39 cm.
"The late W.R. Dykes. Biographical note by Mrs. W.R. Dykes" : p. 13-15.