Retrieved from the current (Jan 14, 2009) wikipedia entry on Charles Leblond:

To mark his 65th birthday in 1975, Leblond was honored at an international symposium on the existence of stem cells in adult tissues; the resulting book, Stem Cells of Renewing Cell Populations, was the first formal, comprehensive account on the subject.[16]

16. Cairnie A.B., Lala P.K. and D.G. Osmond. Stem Cells of renewing Cell Populations Academic Press. N.Y. 1976.

Hmmm - my dad edited the first book on stem cells....