Hey there, Elks Lodges have a campground directory available from the Carmichael CA. Lodge. There are 4 (I think) separate books that cover certain areas of the U.S. Very handy!
Also, there is a website that features RV camping info with regard to Elks.
Some lodges have super accommodations, while others are sparse at best. If you do stay at one, you probably will be in a safe place with friends.