05/28/2026
Did you know that there’s a scientific reason behind why blueprints are blue? To make copies of an original hand-drawn technical or architectural drawing, paper coated in a photosensitive ferric compound is exposed to light, which produces the unique white lines on blue background – a negative image of the original. The name of the process (cyanotype) gives a nod to the colour of image it creates, and the process is still used as an artistic technique for printing on paper, fabrics, and objects. While changes in technology have let us make copies more easily through large scale scanners, printers, and computer-aided design software, blueprints are found in the collections of many archives due to their historical origins.
While we don’t have blueprints (or other architectural drawings) for every building in town, the Red Deer Archives are lucky enough to have some remarkable examples such as this design for the photography studio of Henry Mar. Mar was a successful photographer in Red Deer during the 1940s-1950s, and opened his new studio in 1947 in the Mar Block on Gaetz Avenue.
Henry Mar’s Studio, [before 1946]. Red Deer Archives, K24554. https://buff.ly/cNk0zAm