Various tools for writers operated by the ReAnimus Press crew:

Anthopology 101: Reflections, Inspections and Dissections of SF Anthologies, by Bud Webster
Modern Science Fiction, by Reginald Bretnor, ed.

General:

The Craft of Writing Science Fiction that Sells, by Ben Bova
How To Improve Your Speculative Fiction Openings, by Robert Qualkinbush
In Search of Wonder, by Damon KnightOf Worlds Beyond, by Lloyd Arthur Eshbach, ed.HeinleinThe Science Fiction Novel, by Basil Davenport, Robert A. Heinlein, C. M. Kornbluth, Alfred Bester, and Robert BlochSF in Dimension, by Alexei and Cory PanshinThe Issue at Hand, by James Blish (as William Atheling, Jr.)Footprints on Sand, by L. Sprague de Camp and Catherine Crook de CampMore Issues at Hand, by James Blish (as William Atheling, Jr.)Space Travel - A Science Fiction WriterHaving Relationships With Characters on the Road to Great Fiction, by Andrew BurtHeinlein in Dimension, by Alexei PanshinStaying Alive - A Writer