All contributors are from the National Gallery of Art, except as noted below.

Barbara H. Berrie

Former head of scientific research and senior conservation scientist

Sue Ann Chui

Senior conservator of painting

Kurt Heumiller

3D program coordinator

Suzanne Q. Lomax

Former senior conservation scientist

Therese Martin

Research professor, Instituto de Historia, Consejo Superior de Investigaciones Científicas, Madrid

Laura C. Panadero

Photograph conservator

Kimberly Schenck

Former head of paper conservation and senior conservator

Dylan Smith

Robert H. Smith Research Conservator

Joan M. Walker

Conservation scientist

Matthew J. Westerby

Digital research officer, Center for Advanced Study in the Visual Arts

Gregory A. Williams

Photographer

Fulvia Zaninelli

Specialist, curatorial records and files