Library of Congress. Copyright Office, Catalog of copyright entries, third series… (1971)
“ Universal Studios. Produced in association with Groverton Productions, Ltd. 53 min., sd., color, 16 mm. (Owen Marshall, counselor at law) © Universal City Studios, Inc.; 1Jan73 (in notice: 1972) ; LP43409.LP43410.An Often and familiar ghost. Universal Studios. Produced in association with Groverton Productions, Ltd. 53 min., sd., color, 16 mm. (Owen Marshall, counselor at law) © Universal City Studios, Inc.; 4Jan73 (in notice: 1972) ; LP43410.LP43411.Sometimes tough is good. Universal Studios. Produced in association with Groverton Productions, Ltd. 53 min., sd., color, 16 mm. ”
