I sent a LOR, trading card and SASE to Zach Werenski of the Columbus Blue Jackets on Nov. 27th 2017. I received my card back, autographed, on Sept. 4th 2018! I used the Blue Jackets address in the database:
Columbus Blue Jackets
Nationwide Arena
200 W. Nationwide Blvd.
Columbus, OH 43215
USA