Sorry I missed this memorial date:
http://northeastfirephotos.smugmug.com/FDNY/Bronx-Collapse-of-Engine-48s/13661967_TRFtZB#!i=997398018&k=xw9cj
Pictures of Engine 48 members operating at 1956 fire and building collapse:
Picture taken moments before collapse.
http://nyfd.com/3rd_ave_4-4-56.html