Back Row (l-r): Fisher, Sanders, Fulk, Mayhew, Merkel, Stienstra, Purdy
Middle Row (l-r): Bland, Gibson, Duggins, Hofmann, Fine, Stamper, Cornwell
Front Row (l-r): Adams, Lui, Olson, Brackin, Layton, Ferro, Richards, Mech
Absent: Chambers, Burchett

Tab was introduced in 1963. We checked.

Calculators weren't really used extensively until about 1976 though. So no calculators.

Just slide rules. That's what those are, in case you were born after 1976.