Distinguishing features
Added components:
- Locking skewers on both wheels and also seat post
- Fenders on both wheels
- Rear panier rack (black); 'Schwinn' is painted in yellow.
Distinctive markings:
- Schwinn MTB CR-MO sticker above bottom bracket
- "Built & Serviced by Western Cycle" (Edmonton) sticker, also above bottom bracket
- "CR-MO" painted in white below handlebars
Catalog page: http://bikecatalogs.org/SCHWINN/1991/Catalog/High_Plains.html