• Paper Lab
  • 264 South 23rd Street  
  • Philadelphia, PA 19103
P 215.545.0613
F 215.735.9313


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Book Conservators

CCAHA's Book Conservators have worked at conservation laboratories across the world. They bring wide-ranging experience to their work at the Center, treating objects from manuscripts to treasured family Bibles. 

  • Theresa Cho

Jungohk (Theresa) Cho

Senior Book Conservator

Jungohk (Theresa) Cho received her graduate degree in Conservation from the Camberwell College of Arts, University of the Arts London.  She also holds an MFA in Book Arts and Printmaking from the University of the Arts. While working toward her MFA, Theresa served as a book conservation intern for the American Philosophical Society in Philadelphia from 1999 to 2000 and as a book conservation technician for CCAHA from 2000 to 2004. She has worked at the Sterling Memorial Library conservation lab at Yale University and the Victoria & Albert Museum conservation lab in London. 

Theresa has worked on numerous projects at CCAHA, including John James Audubon’s Viviparous Quadrupeds of North America from the College of Physicians in Philadelphia; rare 18th- and 19th-century Korean maps and atlases from the Library of Congress; general assembly collections from the Pennsylvania State Library; and orderly books from the Society of Cincinnati. She has surveyed collections of the Hampton National Historic Site and Carl Sandburg National Historic Site, as well as African Jewish Manuscripts of Yale University Library.

Read our 2012 interview with Theresa here.

  • Amber Hares

Amber Hares

Book Conservator

As Book Conservator, Amber Hares meets with clients, writes reports, and treats a wide variety of bound materials, from incunabula to 20th-century artists’ books. She also develops and presents programming related to book conservation and collections care.

Amber is a member of the American Institute for Conservation of Historic and Artistic Works (AIC), the Philadelphia Area Conservation Association (PACA), and the Delaware Valley Chapter of the Guild of Book Workers.

Before joining CCAHA in 2007, Amber worked as a bookbinder at the New Ridge Bindery and as Managing Editor at Afterimage. Amber has served as the designer for the American Institute for Conservation of Historic and Artistic Works (AIC)’s Book and Paper Group Annual since 2008. In 2015, she was selected to attend a month-long Book Structures for Conservators class at the Winterthur Museum, Garden and Library, funded by the Andrew W. Mellon Foundation. She won the Director’s Scholarship at the Rare Book School in 2016. She received her MFA in Visual Studies with a concentration in Book Arts from the Visual Studies Workshop and a BFA in Photography from Asbury University.

  • Richard Homer

Richard Homer

Book Conservator

Richard Homer received his Certificate in Bookbinding from North Bennet Street School in Boston, Massachusetts. In his position at CCAHA as a book conservator, he performs book conservation treatments ranging from the full treatment of a 14th Century manuscript Bible from the Rare Book Department of the Free Library of Philadelphia, to a unique, autographed, and collage-decorated copy of Kurt Schwitters' Anna Blume printed in 1922. Richard is a member of CCAHA's Health and Safety Committee and has developed a treatment protocol for the use of calcium phytate to conserve iron gall ink manuscripts. 

Before joining the staff at CCAHA in 2000, he worked as a Protective Enclosures Assistant at the Widener Conservation Lab of Harvard University and as the Collection Maintenance Assistant at the New England Historic Genealogical Society in Boston, Massachusetts where he performed conservation treatment on books, maps, and pamphlets and assisted with an inventory of the collection.

Read our 2015 interview with Richard here.