I happen to have a souvenier booklet that I was once given that has pictures of The Cackle Sisters in it as well as other acts that played Valley View Park near Hellam PA in the summer of 1941. Entitled "Prairie Pals Album W-O-R-K--York, PA" it was put out by the Prairie Pals, a band that played on radio station WORK (along with The Western Vagabonds), ran the park and served as hosts to nationally known touring acts.

There are pictures of the acts themselves along with obligitory joint posings with the Pals and Vagabonds. Besides the Cackle Sisters, there are photos of The Girls Of The Golden West, Lulu Belle & Scotty, The Dinning Sisters, The Georgia Wildcats, Roy Rogers, The Sons Of The Pioneers and Ken Maynard and his horse Tarzan.

It also contains summer vacation pictures from Shorty Fincher of the Pals, pictures from the WORK company picnic and blank pages in the back of the book to put your own photos and autographs you might have gotten from the stars.

In all, quite an interesting period piece. I can Xerox photos and text on any acts on request. PM me if interested.