with regard to the two queries about Lisp source in C for Apple //,
and inexpensive Lisps for Apple //. for the first you might try
David Betz's XLISP which I've seen discussed here and on Compuserve.
commercially available Lisps for the Apple // that I've seen advertised
(and I make no claims for the accuracy/currency of this info) are
App-L-ISP v2.1 $50
Special Software Systems
1655 Campbell Ave.
Thousand Oaks, CA 91360
(805) 494-0040
and
KeyLisp $149
XPrime Corporation
??? Santa Monica Blvd., Suite 204A
Los Angeles, CA 90025-4656
(213) 470-4663
I'd appreciate any corrections/additions about the info here, or
comments about the products.
steve