Table of Contents: Nitrogen from the air; Bull's Gap cut-off; Stays put while you're putting; Strip coal mining in the Northwest; A Duco color card on wheels; Popular Gladstone; Pyralin, a fountain of new effects in fountain pens; Greater...
Text from photo: Space age communications cap 1920s fountain: a picture from the past illustrates the changing priorities of the times. In 1923 this fountain was the centerpiece of the "open air court" in the new H Street Washington headquarters...
Periodicals; Chemical industry; Explosives; Dynamite;
Table of Contents: Avoid Thawing Accidents; The Trouble Duo; Improved Red Cross Dynamite; A Winner: Red Cross Extra 20%; Snow Doesn't Fease the Red Cross Blaster; Word "Danger" on Every Cartridge; A Remarkable Shot with DuPont Straight Dynamite and...
Table of Contents: Research activities; Kentucky's black rock; A classic of the air; Parlor, bedroom, and bath; Books and looks; The Tontine shade roller; Gypsum in the Empire State; What of the years to come; Cellophane in the home; Evolution of...
Table of Contents: Dynamite fear complex; Camels take out quality insurance; Quarrying vanport limestone; They can be used again and again; An educational service; Do you need a new golf bag; The middle Rio Grande conservancy project; Introducing...
