try stardance, starseed and starmind.

i've been reading his stuff for years (and years) and get all nostaligic over the callahans series. a good place for a spin off is callahnas lady and lady slings the booze. this is mike callahans wife - lady sally - who runs the best whorehouse in brooklyn. those have to be checked out.

be warned, spider's style is not heinlein's.

lh