looks like a kit trailer that they used to sell in the back of pop mechanics mag in the 50's.. I have parts of one I'm planning to rebuild,, mine was too rusty to use the body,, but the axle, suspension, and most of the frame was in good shape.. apparently wet leaves sitting for years make trailer tubs rot away.. but down in TX you shouldn't have that issue.. Mine has a very solid built frame..
Its worth a look see..
Here is a picture of mine,, before,,,