Maybe one of these similar products would be of interest:-
Schwinn High Plains Mountain Bike
Vintage Schwinn Sierra Frame Set 20.5 in Black Chrome 4130 CRMO Ding MTB 26
1983 Schwinn High Sierra Mountain/Gravel bike frame and fork
SCHWINN SR SUNTOUR High Timber Blue, Gray and White Bike 26"
1992 Schwinn High Sierra MTB Bike Frame 17" Medium Hardtail Chromoly Ships Fast!