South Haven is a port city in southeast Michigan, where the Black River flows into Lake Michigan.

A center of transportation of passengers and freight, the area became a popular resort community in the early 20th century when it was billed as “The Catskills of the Midwest”.

In August of 1910, Martin was visiting South Haven and he sent a postcard greeting to Miss Florence Howard in Chicago.

The face of the postcard shows a group of tents along the Black River; passing the encampment are two pleasure boats.

The postcard is titled, “South Haven, Mich.  Camping Out and Launching on Black River”.

Published by the “Hugh C. Leighton Company, Manufacturers” of Portland, Maine, the postcard was printed in Germany.

On the reverse, Martin writes, “had a nice trip coming over. Was a little bit rocky but that’s all”.

I suspect that Martin took one of the many steamers that crossed Lake Michigan, from Chicago to South Haven, each day.

One of the steamships, circa 1910, is pictured in the Wiki article attached to the Comments.

One hopes that Martin enjoyed his summer excursion and that Florence was thrilled to receive the inviting scene on the postcard.