Historical clue formulations

• Sources of prints, for short — 2017-01-28
• Darkroom masters, for short — 2016-01-04
• Darkroom production, for short — 2010-05-06
• Developer's needs, for short — 2009-11-19
• Pics from which to make more pics — 2005-09-19
• Masters in photography: Abbr. — 2005-05-06
• Photog's cache — 2003-06-29
• Darkroom images, for short — 2001-11-28
• Darkroom items, for short — 1994-11-04