Offered for sale is this illustrated advertising cover for Baron's House Hotel in Concordia, Kansas and sent in 1937 to a company in Chicago.  There is a nice illustration of the hotel sign featuring a regal traveler.  The cover is franked with a 2c Washington and has a duplex cancel of Atch (ison) & Stockton.  This will make a nice item for collectors of RPO's or Kansas postal history.