131 ENLARGING. … frame is attached, the remainder of the window may be blocked up with pressboard or opaque cloth. This will lessen the expense and also facilitate the putting in place and removal of the frame. Figure 2 shows the Kodak and holding frame in profile and illustrates method of holding Kodak in position…
Photography
Internet Archive · Getty Research Institute · Public domain (published before 1931). Free to use for anything.
