I could not even make out the postmark, which was especially frustrating. My husband had a fantastic idea, which ended up solving the mystery. All we needed was a bright, LED flashlight -
The card was postmarked Melrose, Minn., Oct. 1914, and was addressed to Casper J. Kluthe of Howell, South Dakota, and was from Henry Eikmeier, his brother-in-law. It reads, "Melrose Oct 30 1914 Will be at Orient next Wednesday Nov 4th Hope you will meet usYours
Being able to put a date to this card also helped to date photographs from visits of the Eikmeier family to the Kluthe family; prior to being able to read this postcard, I was only able to guesstimate the dates within a few years. In addition, I can add another date/place to the Eikmeier timeline.
I have a number of old photos and postcards that have been glued into albums, and the unfortunate part is that most of those albums had black paper rather than white, so this tip won't work for every situation. But in this case, it saved the day.