Littleton, Colorado. Theaters. Columbine Playhouse To present modern comedy "Invitation to a parch" at 4-H building, Arapahoe County Fairgrounds. Post F 18, 1970 p.7' Entry in Arvada's Harvest Festival will be "Something Unspoken." Post Roundup Ag 9, 1970 p.7 To present "Detective Story." Post Contemporary My 9, 1971 n.9 Opens season with "Man Who Came to Dinner." _ Post 0 11, 1971 p.29