TX Railroad maps

[TXDIRTFISHER]

Anyone know a good resource that would show where the railroads ran in Texas pre-1900? I'm having a hard time finding detailed maps. I can find plenty of maps that would look good in a frame but don't give much detail. Any ideas? My specific area is SE of San Antonio about 30-40 miles. Thanks.

 

[texan connection]

Almost all Atlases of there day had RR maps included i have sold a few on EBAY