I don't trust my dates for that tape BTW. I'm pretty sure we got it in early 79, so I clearly rewrote it at some point if the dates show later -- although it might be a copy from Tektronix - which would match that date. Again my memory is that 1BSD and 2BSD are all a little different. They were written as needed and sent out, although I think they wrote them a few at a time. But my tape from CMU is likely to be different from one that says went to Harvard which was different from what went to Purdue or MIT.
As for when whereis got put into SCCS control, I'm not sure. Take a peak at Kirk's archives.
Clem