Many of the structures pictured aren't Quonset huts. Some are commercial copies, some are larger ex-military buildings which were Cowen huts. http://vilda.alaska.edu/utils/ajaxhelper/?CISOROOT=cdmg11&CISOPTR=14585&action=2&DMSCALE=90&DMWIDTH=512&DMHEIGHT=469&DMX=0&DMY=0&DMTEXT=&DMROTATE=0