B. S. or B. Sc.—Bachelor of Science.
Capt.—Captain.
C. E.—Civil Engineer.
C. O. D.—Cash (collect) on Delivery.
Col.—Colonel.
D. C.—District of Columbia, District Court.
D. C. L.—Doctor of Canon Law.
D. D. S. or D. M. D.—Doctor of Dental Surgery.
D.D.—Doctor of Divinity.
D. Litt.—Doctor of Literature.