- Home page What is dressage Membership Info Calendar of Events For Sale USDF INDA HISTORY AND MISSION STATEMENT INDA was formed by a group of women in the late 1980's. These women wanted to bring dressage to Spokane. They held a recognized show and had a prestigious dressage trainer hold a clinic in Spokane. The first dressage show held in Spokane was in a dusty, rock laden, weed filled roping ...www.spokanehorse.org