On any given day, Billy Johnson is likely to pull from his memory some long-forgotten piece of history that happened in Fort Pierce a half century ago and post it on the popular Fort Pierce Connection Facebook page.

Brech’s presentation Saturday on “The Ais Natives of the Treasure Coast’’ will be given at 11 a.m. in the Black Box of the Sunrise Theatre, 117 S. Second St., Fort Pierce. The presentation is free and attendance is on a first-come, first served basis.

The lineup for this weekend’s Treasure Coast History Festival has been announced, with separate sessions on the native Ais culture and the life of landscape artist A.E. “Bean’’ Backus headlining the event.

The A.E. Backus Museum & Gallery will present a panel discussion entitled “We Remember Backus” as a session in the fourth annual Treasure Coast History Festival on Saturday, Jan. 11, presented by Indian River Magazine. The panel discussion will start at 1 p.m. in the Sunrise Theatre’s Black Box Theatre located at 117 South 2nd Street in Historic Downtown Fort Pierce. Admission is free and no reservations are required, though seating is on a first-come, first served basis.

The Treasure Coast History Festival returns to downtown Fort Pierce on Saturday, Jan. 11, with an all-day event featuring historical re-enactors, ghost tours, historical trolley rides, sessions on historical topics and an old-Florida fish fry.

Treasure Coast residents will have a rare opportunity Jan. 4 and 5 to visit the original 1917 homestead of Vero Beach pioneer Waldo Sexton.