Offices Held:

1974-76 Board of Directors, Cartography Division of American Congress on Surveying and Mapping (elected).

1976-79 Board of Directors, American Congress on Surveying and Mapping, (elected).

1980-81 Vice-Chairperson, American Congress on Surveying and Mapping, Cartography Division, (elected).

1980 U.S. Deputy Delegate to International Cartographic Conference, Tokyo.

1981-82 President, American Cartographic Association (succeeded to office).

1981-82 Member, American Congress on Surveying and Mapping Board of Direction, American Congress on Surveying and Mapping Executive Committee, & COMPASS (American Congress on Surveying and Mapping/ASP Affiliation Committee), as President of American Cartographic Association.

1982-83 Immediate Past President, American Cartographic Association (succeeded to office).

1982-83 Chair, 1984 Honors Committee, Association of American Geographers (elected).

1985-88 Chair, U. S. National Committee for ICA (USNC-ICA), Spring '85 - Fall '88 (appointed by American Cartographic Association Board).

1985-89 Coordinator, Video Committee, American Cartographic Association (appointed).

1987 Chief Delegate to International Cartographic Conference, Morelia, Mexico (as Chair, USNC-ICA).

1987-91 Chair, ICA Commission on Map and Spatial Data Use, Oct.'87 - Sept.'91 (appointed).

1989-92 Vice Chair, Chair, Immediate Past Chair, Cartography Specialty Group, Association of American Geographers (elected).

1990-93 National Councilor, Association of American Geographers (elected by membership).

1991-93 Secretary, Association of American Geographers (elected by Council).

1991-93 Member, Executive Committee, Association of American Geographers (position held as AAG Secretary).

1991-93 Chair, Committee on Committees, Association of American Geographers (position held as AAG Secretary).

1992-95 Corresponding Member, ICA Commission on Map and Spatial Data Use.

1992-99 Vice President, International Cartographic Association (elected by Executive Committee to fill vacancy '92; elected by Gen. Assembly '95).

1992-94 Member, Steering Committee, University Consortium for Geographic Information and Analysis (UCGIA); organized as the University Consortium for Geographic Information Science (UCGIS) in December 1994.

1994-97 Vice President, President, and Immediate Past President, AAG.

1999-03 Chair, U.S. National Committee for ICA (USNC-ICA).