1) The Development of the Frog's Egg. New York: The Macmillan Co., 1897. FIRST EDITION of Morgan's first book. William Morton Wheeler's copy.

2) Regeneration. New York: The Macmillan Co., 1901. FIRST EDITION. INSCRIBED BY MORGAN TO WHEELER: "Mr dear Wheeler: I hope that you will not be ashamed of the following pages that bear evidence of your kindly criticism, and that you will believe that the author is very grateful for the help you have given him." Wheeler is acknowledged in the preface.

3) The Mechanism of Mendelian Heredity. New York: Henry Holt and Co., 1915. FIRST EDITION. INSCRIBED BY MORGAN TO WHEELER. Written with H.J. Muller, C.B. Bridges, and A.H. Sturtevant, this landmark work presented experimental evidence from studies of the fruit fly (Drosophila melanogaster) demonstrating that genes are arranged linearly on chromosomes and that Mendelian inheritance could be explained by chromosomal behavior.

4) A Critique of the Theory of Evolution. Princeton: Princeton University Press, 1916. FIRST EDITION. INSCRIBED BY MORGAN TO WHEELER.

5) The Genetic and Operative Evidence Relating to Secondary Sexual Characters. Washington, D.C.: Carnegie Institution of Washington, 1919. With a presentation slip inscribed by Morgan to Wheeler.

And 14 others. All 8vo, all in original bindings, many bearing Wheeler's ownership stamps or presentation inscriptions from Morgan, condition generally very good. A complete list available upon request.

AN IMPORTANT COLLECTION OF FIRST EDITIONS AND PRESENTATION COPIES FROM THOMAS HUNT MORGAN TO HIS CLOSE FRIEND AND FELLOW BIOLOGIST WILLIAM MORTON WHEELER.

Thomas Hunt Morgan was an American geneticist and evolutionary biologist whose pioneering experiments with fruit flies established the chromosomal basis of heredity, earning him the 1933 Nobel Prize in Physiology or Medicine. Although initially critical of aspects of Darwin's theory of natural selection, Morgan's discoveries provided a fundamental genetic framework for understanding inherited variation and evolutionary change, helping bridge Darwinian evolutionary theory and modern genetics.

William Morton Wheeler (1865-1937), a distinguished zoologist and entomologist at Harvard University, was a close personal friend of Morgan, despite their differing scientific philosophies. Recalling their friendship, Morgan's student Alfred Sturtevant observed that the two shared a passion for natural history, fieldwork, and intellectual debate, noting that "their strongest bond was their common ability as witty conversationalists" (Evans and Evans, William Morton Wheeler, Biologist, 1970).