I go round and round on the Internet trying to follow leads of just about anything of interest. The latest is trying to follow up on some very old history of this area. It's not surprising I found nothing because finding good info from the 40's or 50's for this area is difficult to impossible. Probably doesn't help that my Spanish is not the best but I do know searching with Spanish works better than English for things like this.
The below map was posted on a Manzanillo/Colima section of Facebook. It's reportedly from the 1900-1920 era which would be pre-revolution. It's of interest to Colima because it gives credence to their age old claim to "La Culebra" which includes Isla de Navidad and Playa Los Coco's.
What interests me is that big section across the top marked Hacienda de Jaluco which includes all of Melaque, Barra de Navidad, Jaluco and probably back to the mountains. Also interesting how Laguna del Tule winds it's way over to the current canal in west Melaque.
Well I'm taking a break from this bit of history but if anyone else has a clue ... please leave a comment.