In some CADs across Texas, there is a 'Deed History' located towards the bottom of the County's page for the property you are researching. You can locate the deed with either the Volume & Page number or 'Deed Number'.
If using the 'Deed Number', enter that number into the 'Quick Search' circled in the second picture.
If using the Volume & Page info, use the 'Advanced Search' option as seen in the 3rd pic.
Seems like this should be common sense to know, but hey for those of us that didn't come out of the womb with mad research skills and title abstracting knowledge, this one is for you.