found: Welcome to Madison County, Alton & East Alton, Illinois, c1978
found: GNIS Jan. 12, 2000(East Alton, Illinois, pop pl., Madison County, 38°52ʹ49ʺN/90°06ʹ40ʺW)
found: Rand McNally comm. atlas, 1998(East Alton; Madison)
found: Columbia gaz.(East Alton, village, Madison co., SW Ill., on the Mississippi, and 4 mi/6.4 km E of Alton, suburb of St. Louis)
found: MW geog. dict.(East Alton, village, Madison co., SW Illinois, on Mississippi River 5 mi (8 km) E of Alton)
found: GeoNames, algorithmically matched, 2009(ppl; 38°52ʹ49ʺN 090°06ʹ40ʺW)
found: Village website, viewed 1 Aug. 2022(Village of East Alton; East Alton; established 1893)