Calling all history buffs: Captain Martin Bayerle brings his book The Tsar’s Treasure to the Old Whaling Church in Edgartown at 5:30 p.m. on Thursday, August 1 with an author’s talk and a question and answer session. The book is the story of the lost luxury White Star Liner RMS Republic which sank in 1909 off Martha’s Vineyard after being hit by the SS Florida in a thick fog. Mr. Bayerle discovered the shipwreck in the early 1980s.

A reception will follow his presentation. Tickets can be purchased at thetsarstreasure.com.