From "Prize Drill," by Colonel John L. Ewing, in the 1921 Register:

"On Friday, May 20, 1921, occurred the annual Prize Drill of the cadets of the Boston Latin School. The companies assembled at the school at 9A.M. The First Battalian assembled in the Latin School yard, the Second in the English High School yard, and the Third in the drill hall . . . It can be truthfully said that this year's drill far exceeded in quality that of any previous year, on account of the splendid training in discipline, posture, and manuel of arms, offered by our new instructor in drill, Major George H. Penny. The carriage of boys at the drill and the excellence of company manoeuvres, are a silent but effective testimony to his excellent instruction."