The description on the front of the card:
The Only Cave of Its Kind in the World
on Lake Erie
Estimated Date: 1930-1940s
Collection: The Crystal Cave
No. in Series: 210
Era: Linen Era
The description on the back of the card:
Put-In-Bay, Ohio. America’s only Island Summer Resort in Lake Erie. Your trip to this Island is not complete without a visit to this rare view of Strontium Crystals found in this Cave. You can take a taxi or walk from the amusement district.
E.B. Ackley, Sandusky, Ohio
Eugene B. Ackley (1871-1957) was a popular musician and bandleader in Sandusky, Ohio.
Read more about E.B. Ackley
Curteich-Chicago “C.T. Art-Colortone” by Curt Teich Co., Chicago, Illinois
E.B. Ackley created the photos and images, but the cards were printed en masse by the Curt Teich Company in Chicago, Ill., under the tradename "C.T. Art-Colortone."
Established in 1898, the Curt Teich Co. was best known for its wide range of advertising and postcards of North America. By the 1920s, it was producing so many postcards with borders that they became recognized as a type dubbed "White Border Cards," creating an "era." Later, Curt Teich's innovations in this printing technique directly led to the production of what we now call “linens” by the early 1930s.
Read more about the Curt Teich Co.
Rights Info: Most likely public domain due to inadequate copyright statements, but it would be best to credit the original publishers and distributors.