Time on the Cross by Robert William Fogel-Stanley L. Engerman 2 volume set 1st Edition (Hardcover)

Time on the Cross 2 volume set Volume one Time on the Cross-The Economics of American Negro Slavery Volume two Time on the Cross-Evidence and Methods (A Supplement) by Robert William Fogel & Stanley L. Engerman 1st Edition COPYRIGHT 1974 1ST EDITION-THIRD PRINTING THIS HARDCOVER TWO VOLUME SET IS IN VERY GOOD CONDITION. VOLUME ONE IS IN VERY GOOD CONDITION (INSCRIPTION ON FIRST BLANK PAGE) WITH JACKET IN GOOD CONDITION-(3/4" TEAR UPPER SPINE OF JACKET) VOLUME TWO IS IN VERY GOOD+ CONDITION WITH JACKET IN THE SAME BOTH BOOKS HAVE PREVIOUS OWNERS BLIND STAMP