Yup -- It was run by Fred Harvey Co.
I recall attending the Pacific Railroad Society annual dinner there many years ago. The highlight was a showing of the film Union Station, starring William Holden, which was filmed at Los Angeles Union Passenger Terminal. The interior is largely un - altered from the as - built photos shown in the Union Station book.
BTW, the creepy scene in The Shining, with Jack Nicholson chasing the actress who played Olive Oyl in Popeye down the stairs, was filmed in the Harvey House as well.