In the second (1904) edition of Frank Rosebrook Symmes' History of the Old Tennent Church - a valuable resource for the study of colonial American Presbyterianism - his daughter Marion has included some interesting prefatory material, including a biographical sketch of her father, and a sample of his personal correspondence.
This two-page sample reveals a side of the respected Presbyterian minister and historian that shows his creativity and (to this writer) a loveable quirkiness. He enjoyed writing rebus letters. Here, both one of his letters and the interpretation are given. Enjoy, and read more by his hand here.