It’s the anniversary of the death of William Pyle - Howard’s father. He suffered a stroke while on a business trip and died in a Boston hospital on October 15, 1892. The date of his death seems to be in some dispute, but this date has been corroborated by Massachusetts and Delaware records.
He is seen here in a photo taken in 1883 (or maybe 1884). On his knee is his grandson, Sellers.