Shadow and shade patterns for four times of a day as generated by program ZORRO, Printed for the DEROB system (1 black and white print), undated

Shadow and shade patterns for four times of a day as generated by program ZORRO, Printed for the DEROB system (1 black and white print), undated, Box: ARUMI014, item: 11. Francisco Arumí-Noe collection, ARUMI. Alexander Architectural Archives. https://archives.lib.utexas.edu/repositories/2/archival_objects/86434 Accessed September 26, 2026.