I dug up the 1991 UCB source to vcat from UUNET archives I have and Rob's note about the 1983 Regents copyright.

I'll keep digging - BTW there is no assembler in this version.

Finding a copy of the original 't' for Toronto directory from the 1977 Harvard USENIX tape would be helpful. I spoke with Henry Spencer yesterday, like me - Henry has the '79 Toronto USENIX tape (which is what is the TUHS archives). I'll try to track down Tom Ferrin, Tom Duff, Bill and Mike later.

ᐧ

On Fri, Mar 10, 2023 at 2:50 AM Jonathan Gray <jsg@jsg.id.au> wrote:

On Fri, Mar 10, 2023 at 07:48:26AM +1100, Rob Pike wrote:
>
> Years later, bless him, Henry Spencer said something on Usenet explaining
> why the "Berkeley typesetting software" was missing the names of those who
> created it. He was in the lab that weekend and saw it happen.
>
> -rob

https://groups.google.com/g/net.unix-wizards/c/eZ1qIlRyhx0/m/UmE8cBRYbPEJ
Henry Spencer in net.unix-wizards Dec 17, 1983

"The proper credits for vcat are roughly as follows:

Bill Reeves most of vcat, and the font editor
Tom Duff the inner loop of vcat, in pdp11 assembler
Rob Pike the (unreleased) precursor to vcat (called vd)
Mike Tilson miscellaneous optimizations

The distributed source for vcat had Reeves, Pike, Tilson in the heading,
and Duff in the lone .s file. My thanks to Rob Pike for refreshing my
memory on this."