GROOVE HEAD FLYROD LURE

Here's one I recently bought for a friend. It's a GROOVE HEAD flyrod lure:
The standard size Groove head wood lure, measuring 3-1/4", was patented in
1948, designed by a woman named Josephine Cole, one of only a dozen or so
women known to have designed lures (excluding flies and fly rod lures).
Made in Van Dyke, Michigan by Colger Mfg. Co. It is so named because of the
groove in the front of the body. The flyrod size (pictured here) is also wood,
measures 2" in length and has the same groove feature. I don't believe this is
in any reference books. Tom Jacomet