Florida Truckers - non-trucker could use your help

[billboards]

I am searching for concrete block billboards that are still standing in central and northeast Florida. These billboards are most likely located along 17/92, 90 (between Lake City and Jacksonville), or SR100 (between Lake Butler and Palatka), US 301. If you have seen any of these concrete block billboards please let me know. Thanks!

Billboards are about 30' wide with concrete block columns on either end with the signage suspended between them. The signs were originally constructed to advertise Ponce DeLeon Springs. The signs were actually patented and you can use Google patents to search for the "Davis Outdoor Signboard" to get a better idea of what the signs look like.

DAVIS OUTDOOR SIGNBOARD - Google Patents

I hate to do it this way, but I'm not sure how to post a picture.

I would greatly appreciate any help. Thanks for you time.