Family Library cannot fill an empty province because it requires targeting. Western Outpost does not, if the province is empty can you refill it with Western Outpost?
Western Outpost & Empty Province
A topic from AEG's L5R CCG Rules forum, copied for Oracle of the Void from a copy of the forum saved in October 2015, so pages it didn't save are missing. Players' names are left out; the rules officials are named. Rulings are as they stood on these dates; later rulings, the rulebooks and the Rules Archive may differ.
Family Library cannot fill an empty province because it requires targeting. Western Outpost does not, if the province is empty can you refill it with Western Outpost?
Yes, you may.