https://www.kwaltersatthesignofthegrayhorse.com/2022/04/fort-frederick-market-fair-2022.html
K. Walters at the Sign of the Gray Horse: Fort Frederick Market Fair 2022
at thegray horsefort frederickwalterssign
https://montgomeryhistory.org/event/history-conversations-rewind-offutts-crossroads-the-early-history-of-potomac-and-its-founding-family/
History Conversations REWIND: Fort Frederick: Three Centuries of History
fort frederickhistoryconversationsrewindthree