Incoming Resources
- Some notes as to the descendants of Willem Abrahnse Tietsoort, blacksmith of Schenectady, N.Y. and early settler at Deer Park, Port Jervis, N.Y. : forming the modern families known as Tietsoort, Titser, Titsworth, & Teachout, by Walter Kenneth Griffin ; with and index to names of connected families
- Tietsoort/Titsworth, a Dutch trek of one family line across the many American frontiers, Don G. Thomas