What is the value of a 78 rpm record ---set sounds of time?

The value of a 78 rpm record typically depends on factors like rarity, condition, and demand from collectors. Sets of records, such as the "Sounds of Time," can vary in value from a few dollars to potentially hundreds of dollars, especially if they are in good condition and sought after by collectors. It's always best to research specific titles and conditions to get a more accurate estimate of value.