Throughout the years, Mark Guthrie and Peter Werkhoven have been invited to write articles about restoration, styles and frame history in PFM (Picture Framing Magazine).

In a series of "Style Snapshots" Mark Guthrie and Peter Werkhoven talk about styles, periods and frame characteristics.

In "Framer-to-Framer" Mark Guthrie discusses period styles, artistic movements, innovations and significant frames with a prominent person in the industry.

Publications

•   Mark Guthrie and Peter Werkhoven, "Reproducing a Neo-Gothic Mirror", PFM (September, 2007).
•   Mark Guthrie and Peter Werkhoven, "Repairing a Trumeau Mirror", PFM (August, 2006).
•   Mark Guthrie and Peter Werkhoven, "Faux Tortoiseshell Frames", PFM (May, 2006).

Style Snapshots

•   The restoration of a Louis XVI Mirror Frame:
  Mark Guthrie, "Style Snapshot. A look at a frame, its characteristics, and history", PFM (December, 2007).
•   History of Seurat-Designed Frames:
  Peter Werkhoven, "Style Snapshot. A look at a frame, its characteristics, and history", PFM (July, 2007).
•   History of the Louis XV Pastel Frame:
  Mark Guthrie, "Style Snapshot. A look at a frame, its characteristics, and history", PFM (June, 2007).
•   Restoration to a von Stuck Frame:
  Peter Werkhoven, "Style Snapshot. A look at a frame, its characteristics, and history", PFM (April, 2007).
•   History of the Italian Cushion-Panel Cassetta Frame:
  Mark Guthrie, "Style Snapshot. A look at a frame, its characteristics, and history", PFM (October, 2006).
•   History of van Gogh-Designed Frames:
  Peter Werkhoven, "Style Snapshot. A look at a frame, its characteristics, and history", PFM (September, 2006).
•   Research into the Decape Finish:
  Peter Werkhoven, "Style Snapshot. A look at a frame, its characteristics, and history" PFM (May, 2006).
•   History of the Tabernacle Frame:
  Mark Guthrie, "Style Snapshot. A look at a frame, its characteristics, and history", PFM (April, 2006).
•   Research into the Fleury Frame:
  Peter Werkhoven, "Style Snapshot. A look at a frame, its characteristics, and history", PFM (November, 2005).
•   History & Use of Dutch Ripple Ornamentation:
  Peter Werkhoven, "Style Snapshot. A look at a frame, its characteristics, and history" PFM (November, 2004).

Framer-to-Framer conversations

•   Framer-to-Framer A conversation with Robert Kulicke:
  Mark Guthrie, "Time Frame", PFM (December, 2003)
•   Framer-to-Framer A conversation with Tim Killalea:
  Mark Guthrie, "Time Frame", PFM (October, 2003).
•   Framer-to-Framer A conversation with William Adair:
  Mark Guthrie, "Time Frame", PFM (September, 2003).
•   Framer-to-Framer A conversation with Jakob Guttmann:
  Mark Guthrie, "Time Frame", PFM (July, 2003).
•   Framer-to-Framer A conversation with Giovanni Bucchi:
  Mark Guthrie, "Time Frame", PFM (June, 2003).
•   Framer-to-Framer A conversation with Jacob Munn:
  Mark Guthrie, "Time Frame", PFM (March, 2003).
•   Framer-to-Framer A conversation with Tracy Gill & Simeon Lagodich:
  Mark Guthrie, "Time Frame", PFM (February, 2003).
•   Framer-to-Framer A conversation with Suzanne Smeaton:
  Mark Guthrie, "Time Frame", PFM (January, 2003).