Historical clue formulations

• Transparent sheet used for overlays — 2018-05-30
• Art film? — 2015-02-21
• Sodium ___ (potato chip flavoring) — 2014-11-09
• Overlay material — 2014-07-16
• Collectible record — 2012-03-24
• Film material — 2008-03-25
• Film overlay — 2007-05-16
• Overlay material — 2007-01-29
• Varnish material — 2006-11-11
• Overlay — 2005-05-14
• Protective plastic sheet — 2005-01-01
• Film material — 2004-12-10
• Synthetic fiber — 2004-10-10
• Transparency — 2004-08-13
• Overhead projector sheet — 2002-09-25
• See-through sheet — 2002-05-31
• Transparency — 2002-05-12
• Film stock — 1999-07-22
• Cel material — 1998-08-07
• Film maker? — 1997-05-29
• 78's composition — 1997-02-15
• Protective sheet for artwork — 1995-09-10
• Old recording disk — 1995-05-21
• Transparent sheet — 1995-05-03
• Cellophane substitute — 1994-08-14