Kirstin Reese  <kirstin@freezy.earthweb.com> wrote:
+---------------
| what is the Offical Date of Scheme's inception?
+---------------

From R4RS (e.g., http://www-swiss.ai.mit.edu/~jaffer/r4rs_toc.html),
sub "Introduction", sub "Background", one might pick December 1975:

	The first description of Scheme was written in 1975 [SCHEME75].
	A revised report [SCHEME78] appeared in 1978, which described
	the evolution of the language as its MIT implementation was
	upgraded to support an innovative compiler [RABBIT]. Three
	distinct projects began in 1981 and 1982 to use variants of
	Scheme for courses at MIT, Yale, and Indiana University [REES82]
	[MITSCHEME] [SCHEME311]. An introductory computer science textbook
	using Scheme was published in 1984 [SICP].

	...
	[SCHEME75] 
	     Gerald Jay Sussman and Guy Lewis Steele Jr. Scheme: an
	     interpreter for extended lambda calculus. MIT Artificial
	     Intelligence Memo 349, December 1975. 

But they'd probably been playing around with it for a while before then...


-Rob

-----
Rob Warnock, 7L-551		rpw3@sgi.com   http://reality.sgi.com/rpw3/
Silicon Graphics, Inc.		Phone: 650-933-1673 [New area code!]
2011 N. Shoreline Blvd.		FAX: 650-933-4392
Mountain View, CA  94043	PP-ASEL-IA