Scientific American, A Weekly Review of Progress; Includes four issues for February 1920 (February 7, February 14, February 21, and February 28)

Softcovers. Includes four issues of the Scientific American weekly magazine for 1920: February 7, February 14, February 21, and February 28, 1920. All VG. All somewhat age-toned. Each issue has some light rubbed soil to the covers, but overall, are fairly clean. Corners a bit bumped. The Feb 14 issue has some bumping at the top edge. The staples are somewhat rusty. Pages are a bit age-toned, but clean. Many ads; including automotive ads, some full-page. ; 28B; 13-3/4" x 11".