Which came first? Games pac for ... ?

[Gene]

Haven't been able to find an easily accessible answer, but ...

What was the first manufacturer produced Games pac?

The SR-52 had one that TI sold and so did the HP-67/97.

The SR-52 seems to have a copyright date of 1976, while the HP-67/97 games pac seems to not be available until mid-1977 per Keynotes June 1977.

Anyone able to answer? Did TI actually get theirs out first? I do remember the SR-52's game pac was pretty sad in comparison to the HP's pac.

(Of course, PPC had been publishing a number of great games oriented issues long before these).

Gene