Keywords:1938-3, Bank, Door, Eye, First, First National bank, Magic, National
Photo Info
Dimensions2705 x 2149
Original file size3.35 MB
Image typeJPEG
Color spaceUncalibrated
1938-3_First National Bank; Magic Eye Door
1938-3-17, First National bank, "The 'magic door' shown in operation here was installed Friday in the First National bank. An electric "eye" controls the door's mechanism. A beam falls from one of the posts seen in the picture on a photo-electric cell in the post across the front of the door. Breaking the light beam causes the cell to set the door-opening machinery in operation."