- FondsLincoln - Papers of Jean Louis Lincoln
- SeriesC - Documents concerning the Guyomard family
- Item1 - Coat of Arms of Guyomard de Preaudet
- Item2 - Genealogical notes
- Item3 - Contract of exchange
- Item4 - Marriage Certificate
- Item5 - Extract from the birth record of Louis Julien Ernest Guyoman de Preaudet
- Item6 - Notice sur la famille Guyomard de Preaudet
- Item7 - Notice sur la famille Guyomard de Preaudet