When Bill Harrah moved from So. Cal. to Reno, he opened up a Tango (Bingo) game in Reno. Here's ChipGuide link to a matchbook advertising Harrah's "Heart Tango" game from the very early days.
(I'm not sure what the "Heart" refers to.)
https://chipguide.themogh.org/cg_showpic2.php?cg=089806