Hi Lord Enforcer! That looks to be a community sheet, by lelajcorson . You might try contacting them directly. Unless a sheet ends with "by Roll20" in the name, it's almost certainly written by a member of the community. That link is probably the only contact. They don't seem to have a presence on the forums, and it was another community member who discovered their code elsewhere and convinced them to make it available. Assuming there is not more than one Aces & Eights sheet.