The United States Territories. Map of the 39th Parallel Arc.

Interpretive Programs Office:

  • Irene Chambers, Chief
  • Carroll Johnson-Welsh, Exhibition Director
  • Deborah Durbeck, Production Officer
  • Christopher O'Connor, Lead Exhibition Production Specialist
  • Betsy Nahum-Miller, Online Exhibition Coordinator
  • Tambra Johnson, Registrar
  • Denise Agee, Kimberli Curry, David Hayward, Martha Hopkins, Tony La Greca, Seth de Matties, Cheryl Regan, Patrick Shepler, Rachel Waldron, and Susan Mordan-White


  • Ginny Mason, Geography and Map Division, Chief Curator
  • Curtis Sumner, American Congress of Surveying and Mapping, Guest Curator
  • Edward Redmond, Geography and Map Division, Curator

Staff Contributors:

Geography & Map Division

  • John Hébert, Chief, Geography and Map Division
    Colleen Cahill
  • James Flatness
  • Diane Schug-O'Neill
  • Jacob Zonn

Conservation Division

  • Heather Wanser

Printing Management Section

  • Stanley Bandong
  • Onnetta Benoit

Network Development and MARC Standards Office

  • Julie Mangin
  • Elizabeth Miller

Special thanks are due to the following:

  • Ilse Genovese, ACSM
  • Laurence Socci, ACSM
  • John Hohol, ACSM
  • Ronald Grim, Boston Public Library
  • Leo Dillon, U.S. State Department
  • R.C. Fields, Jr. and Associates, PC
  • Hydro Consultants, Inc.
  • GIS & Mapping Branch--Fairfax County, Virginia
  • Professional Surveyor Magazine
  • National Geographic Society

Environmental Systems Research Institute, Inc. (Video)

  • Betty Martinez
  • Andrew Massena
  • Charmel Menzel
  • Tom Schwedler
  • Donny Sosa

Exhibition and Brochure Design

  • Dennis/Konetzka Design Group, LLC

The exhibition is made possible by the American Congress on Surveying and Mapping. ACSM gratefully acknowledges the support of the exhibition from Trimble Navigation Limited and the following other contributors: Leica Geosystems, Inc.; Topcon; Berntsen International, Inc.; Bureau of Land Management; National Geodetic Survey; POB Magazine; Environmental Systems Research Institute (ESRI); Minnesota Society of Professional Surveyors; New England Section/ACSM; Kentucky Association of Professional Surveyors; Arizona Professional Land Surveyors; Wisconsin Society of Land Surveyors; Land Surveyors Association of Washington; North Carolina Society of Surveyors; Connecticut Association of Land Surveyors; Michigan Society of Professional Surveyors; Virginia Association of Surveyors; Western Federation of Professional Surveyors; New Jersey Society of Professional Land Surveyors; Professional Land Surveyors of Ohio; California Land Surveyors Association; New York State Association of Professional Surveyors; Kansas Society of Land Surveyors; Tennessee Association of Professional Surveyors; Mississippi Association of Professional Surveyors; New Hampshire Society of Land Surveyors; R.E. Church Company; Montana Association of Registered Land Surveyors; Idaho Society of Professional Land Surveyors; Professional Land Surveyors of Oregon, Albemarle Chapter/North Carolina Society of Surveyors; Mecklenburg Chapter/North Carolina Society of Surveyors; Piedmont Chapter/North Carolina Society of Surveyors; Eastern Chapter/North Carolina Society of Surveyors; Foothills Chapter/North Carolina Society of Surveyors; and Virginia Surveyors Foundation.