Pete - It looks like they were used 1978 - 88. As you can see below, the illustration says the "bucket", as opposed to the captain's chair, was used from 1980 through 88.
But, as you'll see, the prefix for the part numbers for 61694 range from D8 to E4, and the difference was the color. For instance, D8ZZ 6961694-F was black, and it was used up through '83. And D9ZZ-B was Sand and it was used in '80 and surely '79, although my catalog doesn't go back that far.
I don't have any, but thought this info might help you find some.
Gary, AKA "Gary fellow":
Profile
Dad's: '81 F150 Ranger XLT 4x4: Down for restomod: Full-roller "stroked 351M" w/Trick Flow heads & intake, EEC-V SEFI/E4OD/3.50 gears w/Kevlar clutches
Blue: 2015 F150 Platinum 4x4 SuperCrew wearing Blue Jeans & sporting a 3.5L EB & Max Tow
Big Blue: 1985 F250HD 4x4: 460/ZF5/3.55's, D60 w/Ox locker & 10.25 Sterling/Trutrac, Blue Top & Borgeson, & EEC-V MAF/SEFI