This headstone is located in the Jones family cemetery behind Morton Hall. The headstone notes that Jones was a captain in the 1st Regiment of the Light Dragoons in the Revolutionary War. There is some dispute as to whether Jones is actually buried there.
This booklet, a Meldungsbuch, is a record of Mrazek's enrollment at Deutsche Technische Hochschule Brünn (German Technical University in Brünn, Czechoslovakia, now Brno, Czech Republic), where he received an MS in Engineering in 1934. The booklet identifies his courses and professors and includes a photograph of Mrazek.