Various tools for writers operated by the ReAnimus Press crew:

The Science Fiction Novel, by Basil Davenport, Robert A. Heinlein, C. M. Kornbluth, Alfred Bester, and Robert Bloch
Staying Alive - A Writer

General:

Having Relationships With Characters on the Road to Great Fiction, by Andrew Burt
The Issue at Hand, by James Blish (as William Atheling, Jr.)
HeinleinMore Issues at Hand, by James Blish (as William Atheling, Jr.)The Craft of Writing Science Fiction that Sells, by Ben BovaOf Worlds Beyond, by Lloyd Arthur Eshbach, ed.Space Travel - A Science Fiction WriterHow To Improve Your Speculative Fiction Openings, by Robert QualkinbushModern Science Fiction, by Reginald Bretnor, ed.Footprints on Sand, by L. Sprague de Camp and Catherine Crook de CampAnthopology 101: Reflections, Inspections and Dissections of SF Anthologies, by Bud WebsterHeinlein in Dimension, by Alexei PanshinSF in Dimension, by Alexei and Cory PanshinGalaxy Magazine: The Dark and the Light Years, by David L. Rosheim