" Sing a Long" Mugs from Big Top Peanut Butter

It appears that Hazel Atlas made "Sing a Long" Glasses for Big Top Peanut Butter some time before 1955 when Procter & Gamble took over the company from W.T. Young of Lexington, KY who had founded Young Foods Inc. in 1948.

This is an 8 piece set of "Sing a Long" Mugs. I assume by Hazel Atlas.
Old time song titles on one side and lyrics on the other.

It is my understanding that these mugs were only distributed to a small area of the country. But where and how many were made?

Any help would be appreciated.

Thank you