Hi Ralph & welcome to the board!

What is your last name?
What city & state on the postcard?
Do you know of any gaming at the location?
I can't find a Nevada gaming license issued for an Imperial 400 Motel nor a Vagabond Motel. If it was in another state, try an old phone book or a public library. After we know the city, maybe someone on this board can help look up the info. The only "Vagabond" that I know of was the Vagabond Club, 127 W. 2nd St., in Reno, NV. They were denied a license in 1952.