i think, the answer is right there in the pic... see link, wherein it states:

George Littlefield had a "Deodar Cedar" (Cedrus deodara), or "Himalayan Cedar" imported from the Himalayas and planted on the property. Littlefield even had the soil where the tree was to be placed dug up and replaced with Himalayan soil.[1] Arguably one of the most interesting trees on campus, the approximately 35-foot tree is located on the southwest side of the house, and is readily discernible by its distinctive horizontal layers.

ken

ps: its not a pine .... lol.. but it sure looks it ....

Here is a link that might be useful: link

Wow, that is fascinating! So, that Himalayan cedar was imported, is over a hundred years old now...and has even managed to grow in Texas!

Very clever sleuthing, my friend! B)

Here is a link that might be useful: Cedrus deodara