Professional Practice

Who oversees and administers HALS?

The National Park Service (NPS) administers the planning and operation of the Historic American Landscapes Survey (HALS), which includes: selecting and approving landscapes for documentation, standardizing formats and developing guidelines for recording landscapes, catalogs and/or publishing the information when appropriate.

The Library of Congress accepts and preserves HALS documents, furnishes reproductions of material, and makes records available to NPS.

The ASLA Professional Practice department works with ASLA’s Historic Preservation Professional Practice Network (HP PPN) to provide advice on identifying, selecting, and documenting historical landscapes. The ASLA HP PPN, through its HALS Subcommittee, oversees the nationwide identification of historic landscapes that merit HALS documentation.

2019 HALS Subcommittee:

Christopher Stevens, ASLA, Chair / Coordinator
Ann Mullins, FASLA, HP-PPN Leadership Team Liaison
Jonathan Ceci, ASLA
Christine Donhardt, ASLA
David Driapsa, FASLA
Helen Erickson, Associate ASLA
Birgit Kibelka, ASLA
Andrew Kohr, ASLA 
Elena Pascarella, ASLA
Christine Pattillo, FASLA
Thaïsa Way, FASLA
Christa Wollenzien, ASLA
Barbara Wyatt, ASLA
Carol J. H. Yetken, ASLA

In memory of Dr. Charles L. Leider, FASLA, FAICP, Professor and Director Emeritus, Landscape Architecture Program, Oklahoma State University, Stillwater, Oklahoma: Dr. Charles Leider, a longtime member of the ASLA HALS Subcommittee, was a dedicated and productive friend to the HALS Program and will be remembered for all of his amazing accomplishments, a few of which are summarized here.

See the ASLA HALS Guidelines for more information about the HALS liaisons, the HALS coordinator, and the HALS subcommittee. Anyone with comments or interest in volunteering or assisting with HALS, please email


Julia Lent

Maxine Artis

Professional Practice 

Library and Research Services                          
Ian Bucacink

RFQs & Opportunities                                      
JR Taylor

Historic Landscapes (HALS)                              
Ali Hay