Photograph is exhibit "E" in a court case regarding the building of a tunnel from 662 Kingsway to the Royal Bank Kingsway Branch.
Notes written on the back include: " Mushrooms. These four [refers to CVA 371-499, CVA 371-500, CVA 371-501, CVA 371-502] came from the Court House, Georgia street, and were used in the prosecution of bank robbers who had attempted to rob the Royal Bank of Canada, 670 Kingsway, in 1936. They rented the store No. 662, --two doors from the bank-- and announced that they were going to grow mushrooms by some special artificial process they had discovered. The box, or cabinet like structure in the photographs was supposed to be part of the apparatus, and, of course, was 'secret', (lest others find out the process of growing the mushrooms, they said). Actually it was to conceal the entrance to a tunnel, and the earth excavated to make a passage underground to the bank, which they hoped to gain access to by coming up under it. How the deceit was discovered I do not know, but the case came up in the Vancouver police court, March 27th 1936"