Is there a way to see/have access to a deceased family members Temple Reservation List so I can get the work done for those ancestors on their Temple list?
There is an article in the FamilySearch Help Center that will assist you in the process to release them. Copy the title below and go to the Help Center and search for the article using it to find the article. It explains the process you will need to follow.
A person who reserved ordinances has died, is incapacitated, or had a withdrawal of membership