 He has also been credited as the author of a private memorandum book that is now lost to history, which was heavily drawn upon in 1715 by Dirck Storm to compose the church's history.However, he signed his 1716 will by his mark, so it is more likely that the memoranda should be credited to his son, also named Abraham and a later elder of the church, who had predeceased his father about 1712.The Old Dutch Church of Sleepy Hollow's book of records is one of the most significant records in Early American history.