The group did a portfolio exchange with it's own members. Each member brought in a few prints for review. One image per member was chosen to be included in the exchange. Each member then went into the darkroom to make 18 identical prints. Once everyone was done, 18 portfolios were compiled and each participant received a complete portfolio. Not an easy task for some images to be printed with identical results in those days. The number may not have been 18 and not all of the images are in this collection.
A few years later, the collection became a traveling show. New members not participating in the original show were invited to be added. The images below has some of those newer images along with some of the originals.