ORIGINAL, NOT A COPY NOR A REPRINT; FOUR DIFFERENT ISSUES OF SCIENTIFIC AMERICAN, SEPT 26th, 1885-MARCH 18th, 1893-AUGUST 28th, 1897 SCIENTIFIC AMERICAN SUPPLEMENT ISSUE-APRIL 29th, 1905. 9/26/1885 COVER OF BOSTON FACTORY "VALVES AND HYDRANTS-WORKS OF THE CHAPMAN VALVE MANUFACTURING COMPANY" CONTINUES INSIDE W/MORE ILL's; AND 1+ PAGES ON "ELECTRIC LIGHT ADAPTED FOR USE OF NATURALISTS, CHEMISTS, ETC."-/3/18/1893 COVER "IMPROVEMENTS IN BOSTON HARBOR"-SUPPLEMENT AUGUST 28th, 1897 COVER "NEW MASSACHUSETTS STATE LIBRARY BUILDING AT BOSTON, MASS."-4/29/1905 COVER "THE NEW GRANITE DRYDOCK, BOSTON NAVY YARD" CONTINUES INSIDE; 11" X 16"; MAILING FOLD; COMPLETE 16 PAGE ISSUES-MARGINAL WEAR, TONING, WRITING O/W GOOD TO GOOD+ CONDITION--SEE PHOTOS. CHECK OUT OUR OTHER ADS, HISTORIC AND SPORT ITEMS.