RCS was designed and built by Walter F. Tichy of Purdue University.
RCS version 3 was released in 1983.

Adam Hammer, Thomas Narten, and Daniel Trinkle of Purdue supported RCS
through version 4.3, released in 1990.  Guy Harris of Sun contributed
many porting fixes.  Paul Eggert of System Development Corporation
contributed bug fixes and tuneups.  Jay Lepreau contributed 4.3BSD
support.

Paul Eggert wrote the changes for RCS versions 5.5 and 5.6 (1991).

Paul Eggert wrote most of the changes for RCS 5.7 (1995).
K. Richard Pixley of Cygnus Support contributed several bug fixes.

Thien-Thi Nguyen wrote the changes for RCS versions 5.8
through 5.8.1, with some help (tiny changes) from:
  Ian Delaney
  Karl Berry
  Oliver Billmann
  Paul Eggert
