ClipArt ETC
"The lower case or small letters of this style are drawn with bodies two-thirds the height of the capitals. This letter is generally known as the Reinhardt letter, in honor of Mr. Charles W. Reinhardt, Chief of the Drafting Department of the 'Engineering News,'..." —French, 1911

Basis of Reinhardt Letter

"The lower case or small letters of this style are drawn with bodies two-thirds the height of the capitals.…