Unique Historic Treasures Preserved by Spray Deacidification with Wei T’o® Solutions
Graphic Conservation Department of R.R. Donnelley & Sons Company, Chicago, IL, from 1968 to 1982.
- Audubon: Three complete Elephant Folios, 4v. each, hand-colored engravings.
- Audubon: Chromolithographs (more rare than Elephant Folios).
- Henri Toulouse-Lautrec: Various posters and watercolors.
- Francisco Goya: Etchings, some hand-colored.
- Ryn Rembrandt: About 30 etchings.
- Jean Paul Sartre: 1800 leaf manuscript.
- M. Eacher: Approximately 150 woodcuts and lithographs.
- Frank Lloyd Wright: Various materials including drawings.
- Burnam Plan of Chicago: Watercolor architectural drawings.
- Drawings of the Capital: State of Michigan.
- Chicago Historical Society: Approximately 30 posters from various periods.
- George Washington: Letter of Acceptance of First Presidency of the United States.
- U.S. Declaration of Independence: Three copies printed on July 4,1776.
- U.S. Constitution: First draft and copies of First and Second Printings.
- Abraham Lincoln: Over 2500 letters.
- Helen Keller: Approximately 80 hand-written letters.
- U.S. Army: Thousands of archival records at Fort Sheridan.
- Oliver Cromwell letter.
- King Henry VIII letter.
- About 30 volumes of 16th, 17th, and 18th century atlases from the American Geographical Society Collection at the Golda Meir Library, University of Wisconsin Milwaukee.
- Complete production records for the Winchester rifle from between 1860-1907 including 300 manuscript ledgers and 9,000 leaves of accounting records.
- Declaration of Independence of the Sovereign State of Texas.