* Family papers archive at the National Records of Scotland re the family home at Annacroich https://discovery.nationalarchives.gov.uk/details/c/F19704
* British Medical Journal [https://www.youtube.com/watch?v=aVpHgqX8uI4 video] about the legacy of James Young Simpson including Flockharts role (via [https://www.historyscotland.com/history/sir-james-young-simpson-died-on-this-day-in-history/ History Scotland])'
*Museums and Galleries Edinburgh has an original wax stamp of Flockhart's including his address https://www.edinburghmuseums.org.uk/stories/auld-reekie-retold-surgeon-pharmacist-and-obstetrician