 Estate tours became a popular tourist destination off an exclusive Balloon Route trolley spur of the Los Angeles Pacific Railroad, that later became a Pacific Electric Redcar line, and with print sales additional sources of income for de Longpré.Paul de Longpré is listed in the 1900 US Census, Los Angeles City Ward 5, Precincts 38 B and 73 A, with his wife Josephine and daughters Blance, Alice, and Pauline.His occupation is listed as Artist, but the last name is misspelled as De Lonpre, It indicates Paul, Josephine, Blance, and Alice were born in France, and Pauline was born in New York City.