Typewritten copy of a letter, dated September 15, 1847, composed at Little Rock, Arkansas, and addressed to John D. Phoenix of New York City. Pike was serving as captain of volunteers to fight in the war with Mexico. He writes to David Phoenix telling him of the death of John D. Phoenix and describes the area and the condition of the troops.

Typewritten lectures with handwritten additions and pen-and-ink drawings presumably presented by Pike and others from 1875 to 1916. Most of the material deals with the symbolism used in Freemasonry both verbally and in signs.