What does CoG stand for?

Centre of Gravity (ODA)

Colorado School of Mines, Golden, CO - Library symbol - Library of Congress (LCLS)

Chocktaw, Oklahoma & Gulf Railroad

Reports and Cases of Practice in Common Pleas Tempore Anne, George I, and Geor ge II, by Sir G. Coke - Same as Cooke's Practice Reports - 1706-47 - England - A publication (DLA)