R.D., on the website for the Texas State Library and Archives Commission there is an index where the application number can be found. Also there is a schedule showing the annual amounts paid, which changed often over the years. On ancestry.com the original application can be found, but it does not include the information Connie is looking for that would enable her to determine his date of death. I looked on the Texas death index and did not find him listed there either.

https://www.tsl.state.tx.us/arc/pensions/introcpi.html