Waldorf, Maryland General Assembly of Maryland by an act changed the name to "Waldorf" in honor of William Waldorf Astor (1848–1919), the great-grandson of John Jacob Astor (1763–1848), who was born in Walldorf, Palatinate, Germany. On July 29, 1908, the city of Plumb Valley in Waseca County, Minnesota, changed its name to Waldorf after Waldorf, Maryland. Once a tobacco market village, Waldorf came to prominence in the 1950s as a gambling destination after slot machines were legalized in Charles County in 1949. The boom lasted until 1968 when gambling was once again outlawed. Its subsequent substantial growth as a residential community began
John Jacob Astor Hotel ownership of the hotel changed hands several times. In late 1951, the Hotel Astoria was renamed the John Jacob Astor Hotel, in honor of the city's namesake, John Jacob Astor. The landmark building was repainted pink. However, a postwar decline in business continued, and other problems persisted. In 1961, the Astoria Fire Department found 51 code violations, six of them major, but all of the violations remained uncorrected seven years later. The restaurant and "Fur Trader Lounge" bar were closed by the Internal Revenue Service in early 1968 for failure to pay taxes. In 1968, city officials condemned the building,