Harry Holmes (1) is the author of The US 8th Air Force at Warton 1942-1945: The World's Greatest Air Depot, 1998; The Last Patrol, 2001; P-51 Mustang, 2001; Avro Lancaster, 2005. Harry Holmes (2), the author of Introductory College Chemistry 3RD Edition, is, most probably Harry N. Holmes (Harry Nicholls(?) Holmes). Harry N. Holmes is an author of several Chemistry books (e.g. Introductory College Chemistry, 1931; Introduction to Colloid Chemistry, 1934; General chemistry, 1930, 1936, 1949; Laboratory Manual of General Chemistry, 1933; etc.).