We just could n't have such a terrible sight in one of our pictures . After a little more walking around we decided to leave . When we got outside San Antonio I began thinking about the history of the state . I thought about Travis ' letter and hoped that we as people have learned a few things since those days about helping others .

Question: What is meant by Travis ' letter ?
The letter referred to is one written by someone who had a connection to the Alamo which was in San Antonio .