- found: His A new topographical, historical, and commercial survey of the cities, towns, and villages of the county of Kent, 1776: t.p. (Charles Seymour, teacher of the classics, &c., at Canterbury)
- found: BLC to 1975 (hdg.: Seymour, Charles, teacher at Canterbury)
- notfound: DNB.
- 1991-07-29: new