I'm hoping to write wiki pages for real life figures about their appearances in popular culture, but I want to have specific dates ascribed to them as well. IS there a way to see this without having admin powers?
You cannot as deleted pages do not have a publcally viewable edit history which would be needed in order to access the information that you are looking for. You may be able to compile a list of deleted pages that you would like information on and then ask an admin of the site to retrieve that information for you though.
No problem. I am sure that if you are patient and kind that someone will help you get the needed information. Just note that these pages are not necessarily appropriate for this wiki. If you have another wiki then that it fine though.