↑ Residence Record, in Ancestry.com. U.S. City Directories, 1821-1989 [database on-line].
Name: Mary Ann van Alst, wid. John W. Gender: Female Residence Year: 1867 Street address: Jamaica rd n Williamsburg rd Residence Place: Newtown, Long Island, New York, USA Spouse: John W van Alst Publication Title: Long Island, New York, City Directory, 1867