Michigan Department of State, Division of Vital Statistics

Referenties ^{Permanente link naar dit onderdeel.}

1. "Grave of David Lankester". Grand Rapids, Michigan, Grave of David Lankester.
2. Michigan Department of State. "Michigan Department of State, Division of Vital Statistics". Michigan, Death record for David Lankester.
3. "The Chicago Tribune". Chicago, The Chicago Tribune, 1879-03-31, page 7, column 2.
4. "The Detroit Free Press". Detroit, The Detroit Free Press, 1879-04-08, page 8, column 3.
5. "The Chicago Tribune". Chicago, The Chicago Tribune, 1877-03-29, page 2, column 4.
6. "The Chicago Tribune". Chicago, The Chicago Tribune, 1876-04-04, page 1, column 7.
7. "The Chicago Tribune". Chicago, The Chicago Tribune, 1880-04-06, page 2, column 6.
8. "The Detroit Free Press". Detroit, The Detroit Free Press, 1880-04-06, page 8, column 3.
9. "The Telegram Herald". Grand Rapids, MI, The Telegram Herald, 1891-11-06, page 3.
10. "Grand Rapids Herald". Grand Rapids, Grand Rapids Herald, 1892-01-16, page 3, column 1.
11. "Grand Rapids Herald". Grand Rapids, Grand Rapids Herald, 1892-02-21, page 7, column 3.
12. "Grand Rapids Herald". Grand Rapids, Grand Rapids Herald, 1892-10-17, page 2, column 4.
13. "Grand Rapids Herald". Grand Rapids, Grand Rapids Herald, 1893-01-31, page 5, column 1.