Today, I am recommending four essential works by Tom Purdom, a Philadelphia-based science fiction writer and music critic who enjoyed a remarkable late-career run of more than thirty stories in Asimov’s. Fossil Games (1999): Left obsolete by each new generation of genetic enhancements, our hero joins thousands of other under-enhanced humans fleeing the Solar System aboard a hollowed-out asteroid.  Their voyage turns into a struggle over whether to settle a new world or push on. Bank Run (2005): On a frontier colony world, a banker finds himself hunted by genetically altered mercenaries in the pay of a debt-ridden landowner who wants to seize his bank.  He fights for his freedom with his wits and some white-knuckle financial maneuvering. The Mists of Time (2007): Two unseen time travelers with clashing views watch a tiny Royal Navy schooner pursue a slave ship off the coast of Africa in the 1840s.  A moving tribute to the Navy's campaign against the slave trade. Romance on Four Worlds: A Casanova Quartet (2015): Four stories follow Joseph Louis Baske, a 21st-century Casanova whose love affairs draw him into intrigue on the Moon, Mercury, Phobos, and in the Kuiper Belt. Check out the quoted thread for the recommended works of Theodore Sturgeon, Alfred Bester, Bob Shaw, Clifford D. Simak, Algis Budrys, A.E. van Vogt, C.L. Moore, Cordwainer Smith, C.M. Kornbluth, D.G. Compton, Thomas M. Disch, Alice Bradley Sheldon (James Tiptree, Jr.), John Brunner, Judith Merril, Hal Clement, James Blish, Jack Williamson, Katherine MacLean, Fred Saberhagen, Jack Vance, Leigh Brackett, Edgar Pangborn, R.A. Lafferty, William Tenn, Kate Wilhelm, Avram Davidson, James H. Schmitz, Eric Frank Russell, Brian W. Aldiss, Carol Emshwiller, Wilson Tucker, Chad Oliver, Zenna Henderson, Pauline Ashwell, Frederik Pohl, Henry Kuttner, Barrington J. Bayley, James P. Hogan, C.J. Cherryh, Margaret St. Clair, Keith Laumer, Charles L. Harness, Howard Waldrop, Rosel George Brown, Gordon R. Dickson, Robert Sheckley, Fredric Brown, Kit Reed, Joanna Russ, H. Beam Piper, Daniel F. Galouye, Sydney J. Van Scyoc, Tom Godwin, Andre Norton, Harry Harrison, Vonda McIntyre, John Christopher, John Wyndham, Michael Bishop, Doris Piserchia, Bob Buckley, George Alec Effinger, Olaf Stapledon, John Varley, Miriam Allen deFord, Raymond F. Jones, Suzette Haden Elgin, Richard Cowper, Bruce Sterling, Josephine Saxton, Mack Reynolds, Phyllis Gotlieb, E.E. “Doc” Smith, Sterling E. Lanier, L. Sprague de Camp, Fritz Leiber, George Turner, Octavia E. Butler, Philip José Farmer, Somtow Sucharitkul, Charles Sheffield, Sonya Dorman, Clark Ashton Smith, Norman Spinrad, Naomi Mitchison, Suzy Mckee Charnas, Barry N. Malzberg, Paul Preuss, Lloyd Biggle Jr., George S. Schuyler, Damon Knight, Nancy Kress, E.C. Tubb, John Sladek, Joan D. Vinge, Ward Moore, Marta Randall, Robert L. Forward, Ian Watson, Brian Stableford, Keith Roberts, David R. Bunch, Michael G. Coney, Frank M. Robinson, Christopher Priest, Vernor Vinge, Lee Hoffman, Wilmar H. Shiras, Lucius Shepard, David I. Masson, Mildred Clingerman, Leigh Kennedy, Ernest Hogan, Jack Womack, Kenneth Bulmer, Mark Clifton, Kage Baker, Murray Leinster, Evelyn E. Smith, Kris Neville, Edmond Hamilton, James White, Wyman Guin, Emil Petaja, John Boyd, Christopher Anvil, Alan E. Nourse, T.J. Bass, Colin Kapp, Edmund Cooper, Rog Phillips, Mark S. Geston, James E. Gunn, Walter Tevis, Maureen F. McHugh, John Crowley, George O. Smith, Cherry Wilder, F.L. Wallace, G.C. Edmondson, Stanley G. Weinbaum, Pamela Sargent, Robert F. Young, Fred Hoyle, Eleanor Arnason,  Bertram A. Chandler, Charles Eric Maine, Tanith Lee, Kathleen Ann Goonan, J.T. McIntosh, and Philip Wylie.