You can use console commands to unlock this.
/startquest '"museumcurator1"'
/completequest museumcurator1
/startquest '"museumcurator2"'
/completequest museumcurator2
/startquest '"museumcurator3"'
/completequest museumcurator3
/startquest '"museumcurator4"'
/completequest museumcurator4
/startquest '"museumcurator5"'
/completequest museumcurator5
/startquest '"museumcurator6"'
/completequest museumcurator6