Scheme
originally "Schemer", by analogy with PLANNER and CONNIVER
Guy L. Steele & G. J. Sussman, 1975
A LISP dialect, small and uniform, with clean semantics. Scheme is applicative-order and lexically scoped, and treats both functions and continuations as first-class objects. See T[1].
Scheme RRS
"The Revised Report on Scheme", Guy L. Steele et al, AI Memo 452, MIT, Jan 1978.
Scheme R2RS
"The Revised Revised Report on the Algorithmic Language Scheme", W. Clinger, AI Memo 848, MIT Aug 1985.
Scheme R3RS
"The Revised^3 Report on the Algorithmic Language Scheme", J. Rees et al, SIGPLAN Notices 21(12):37-79 (Dec 1986).
Scheme R3.99RS
Scheme R4RS minus the macros
Scheme R4RS
"The Revised^4 Report on the Algorithmic Language Scheme", W. Clinger et al, MIT (Nov 1991) (ftp from altdorf.ai.mit.edu)
IEEE P1178-1990, "IEEE Standard for the Scheme Programming Language", ISBN 1-55937-125-0.
Scheme86
Indiana University.
MacScheme
Semantic Microsystems.
PC Scheme
TI.
"Orbit: An Optimizing Compiler for Scheme", D. A. Kranz et al, SIGPLAN Notices 21(7):281-292 (Jul 1986).