Benny Goodman And His Orchestra - King Porter - Stomp / Sometimes I'm Happy

"Recorded July 1, 1935" - both labels.
This release also shows "Popular Collector's Issue" thin card sleeve (see scans). This is what I found this record in. According to the book "45 RPM History, Heroes, and Villains of a Pop Music Revolution", these sleeves were not sold to the public, but only used to display records in the shops. However the batch of record that I found this record, and sleeve in were from an old Phono-Op's inventory. So it may not be a consumer item, but they did end up in consumers' hands.