Poison Book Project

Courtesy, Winterthur Library, Printed Book and Periodical Collection

Melissa Tedone

The Winterthur Poison Book Project is an ongoing investigation initiated in April 2019 to identify potentially toxic pigments coloring Victorian-era bookcloth.

Analysis of decorated, cloth-case, publisher’s bindings at Winterthur Library revealed starch-coated bookcloth colored with “emerald green,” or copper acetoarsenite, an inorganic pigment known to be extremely toxic. This pigment’s popularity in England and the United States during the Victorian era is well documented. While the colorant was known to be widely used in textiles for home decoration and apparel, wallpaper, and toys, its use specifically in bookcloth has not been formally explored. Successful bookcloths were a closely guarded trade secret during the nineteenth century, limiting our current understanding of their materiality and manufacture. Conservation staff and interns at Winterthur Museum, Garden and Library conducted a survey of bookcloth pigments in order to correlate the presence of emerald green and other potentially toxic pigments with specific publishers and date ranges. The project initially focused on the library’s circulating collection, which poses a greater potential risk to patrons, and then expanded to include the rare book collection.

In December 2019, the Winterthur Library data set was further expanded in cooperation with The Library Company of Philadelphia, which has significant holdings of cloth-case publisher’s bindings.

General Handling Tips for Nineteenth-Century Cloth-Case Bindings

Nearly 40% of the nineteenth-century cloth-case bindings analyzed for this project, to date, contained lead in the bookcloth colorant. No matter what pigments or dyes may be present, it is best practice to avoid eating or drinking while handling these books. It is also best practice to wash hands after handling books, especially before eating or drinking.

Trends in Use of Emerald Green Bookcloth

Based on the data collected at Winterthur Library and The Library Company of Philadelphia, the following trends in the use of emerald green bookcloth have been identified:

• Vibrant green bookcloth covering the boards (front and back covers)
• Vibrant green or faded brownish bookcloth on the spine
• Gold and blind stamped decoration, often paired with gilt textblock edges
• English or American imprint
• Publication date between 1840s-1860s

Safe Handling & Storage Tips for Arsenical Books

Avoid opportunities for ingestion or inhalation of emerald green pigment. Avoid eating, drinking, smoking, or biting fingernails while handling potentially arsenical bookcloth.

Wear nitrile gloves:

Avoid handling suspected emerald green bookcloth with bare hands. Although arsenic is unlikely to be absorbed through the skin, it can offset onto the hands and be ingested or inhaled through touching the face or eating/drinking. Handling books with damp or sweaty hands can increase the risk of arsenic offsetting onto the skin.

Wash hands:

Even when using gloves, wash hands after handling suspected emerald green bookcloth.

Isolate book:

If a book is suspected to be bound in emerald green bookcloth, seal the book in a zip-top, polyethylene baggie to limit handling and contain potentially friable pigment.

Wipe down surfaces:

Handle books bound in emerald green bookcloth on hard surfaces (such as a table), and avoid upholstered surfaces (such as an armchair). After handling, wipe down hard surfaces that have come into contact with the book using a damp, disposable cloth.

Arsenical Books List

In the nineteenth century, not every book from the same edition would have been bound identically. Therefore, it is possible to have a book of the same edition listed below, but which is not bound in emerald green bookcloth. We provide this list of books that we have found to contain arsenic as a starting point from which other institutions and private collectors may consider their own collections.

OCLC No.	Title	Author	Imprint	Date
	Affection's Gift		Philadelphia: Henry F. Anners	1850
	Angel Whispers		Boston: Dayton & Wentworth	1855
	Angel Whispers		Boston: Wentworth & Co.	1856
	Complete Poetical Works of William Cowper, Esq., The		New York & Philadelphia: Appleton & Co.	1845
	Crystal Sphere: its forces and its beings, The	Sanders, J. Milton	London: Hippolyte Bailliere, 219, Regent Street, and 290, Broadway, New York. Paris: J.B. Bailliere, Rue Hautefeuille. Madrid: Bailly Bailliere, Calle del Principe.	1857
54211672	Elementary Instruction in the Art of Illuminating and Missal Painting on Vellum, etc, 4th edition	Laurent de Lara, D.	London: Ackermann & Co. Strand, and all booksellers	1858
	Ellen; or, The Chained Mother	Harlan, Mary B.	Cincinnati. : Published for the author, by Applegate & Co.	1855
	Faggots for the Fireside	Goodrich, Samuel G. (Samuel Griswold), 1793-1860.	New York: D. Appleton & Co.	1854
	Floral Souvenir, A Perennial Gift		Chambersburg, PA: Shryock, Reed & Co.	1841
	Friendship's Offering		New York: Leavitt & Allen	1856
	Gem Annual, The		Philadelphia : E. H. Butler & Co.	1854
	Gift of Love		Boston: J.Buffum	1850
	Hoyle's Games		Philadelphia: Henry F. Anners	1845
	Kanavagh: a tale, Illustrated	Longfellow, Henry Wadsworth	London: W. Kent & Co. (Late D. Bogue) 86, Fleet Street	1858
	Leaflets of Memory		New York: Leavitt & Allen	1855
	Liberty Bell, The		Boston: National Anti-Slavery Bazaar	1856
	Macaulay's Lays of Ancient Rome	Macaulay, Thomas Babington	Philadelphia: E. H. Butler & Co.	1854
	Military Journal of Major Ebenezer Denny		Philadelphia: J.B. Lippincott & Co.	1859
	My Own Garden	Mrs. Loudon	London: Kerby & Son	1855
	Nellie Gray, or Ups and Downs of Everyday Life		Philadelphia: American Sunday School Union	1855
4272866	Nothing to Eat, Illustrated	Jenkins, Edward O.	New York: Dick and Fitzgerald	1857
	Oasis, or Golden Leaves of Friendship, The	Ferguson, N.L., Ed.	Boston : Dayton and Wentworth, 86 Washington Street	1855
	On Human Longevity and the Amount of Life Upon the Globe	Flourens, P. (Pierre), 1794-1867.	London: New York: H. Bailliere, Publisher	1855
	Patent Hat, The	Ballou, Ellis, d. 1903.	New-York: : Published for the author by Carlton and Phillips, 200 Mulberry-St.	1855
	Plants of the Holy Land	Osborn, Henry S.	Philadelphia : Parry & McMillan	1860
	Poems of Oliver Goldsmith, The		London and New York: George Routledge & Co.	1859
	Rosebud, The		New York: Leavitt & Allen	1856
	Rosebud, The		New York: Leavitt & Allen	1856
	Rural Annual and Year-Book of Country Life		New York: Leavitt & Allen	1856
4799738	Rustic Adornments for Homes of Taste, 2nd edition	Hibberd, Shirley	London: Groombridge & Sons	1857
	Snowflake: a Christmas, New Year, and birthday gift, for MDCCCLIV		Philadelphia: E. H. Butler & Co.	1854
	Sweet Home; or: Friendship's Golden Altar		Boston: L.P. Crown & Co.; Philadelphia: J.W. Bradley	1856
1044734	Tallis's history and description of the Crystal palace, and the Exhibition of the world's industry in 1851; illustrated by beautiful steel engravings, from original drawings and daguerreotypes by Beard, Mayall, etc	Tallis, John	London & New York: J. Tallis and co.	1852
1044734	Tallis's history and description of the Crystal palace, and the Exhibition of the world's industry in 1851; illustrated by beautiful steel engravings, from original drawings and daguerreotypes by Beard, Mayall, etc	Tallis, John	London & New York: J. Tallis and co.	1852
1044734	Tallis's history and description of the Crystal palace, and the Exhibition of the world's industry in 1851; illustrated by beautiful steel engravings, from original drawings and daguerreotypes by Beard, Mayall, etc	Tallis, John	London & New York: J. Tallis and co.	1852
	Wanderers by Sea and Land, The	Goodrich, Samuel G. (Samuel Griswold), 1793-1860.	New York: D. Appleton & Co.	1854
	Winter Wreath of Summer Flowers, A	Goodrich, Samuel G. (Samuel Griswold), 1793-1860.	New York: D. Appleton & Co.	1854
	Works of Robert Burns, The		New York: Leavitt & Allen	1856

Methodology & Results of Analysis

English-language books published between 1837 and 1900 align with the rising use of bookcloth on publisher’s case bindings, and were identified at Winterthur Library through the WinterCat OPAC. The first 200 books tested represented a range of vivid bookcloth colors. Thereafter, only books covered in green cloth were selected for analysis, in order to focus on arsenic and move through the collection more efficiently. X-ray fluorescence (XRF) was used to collect elemental information from bookcloths. When arsenic and copper were found together, Raman spectroscopy was used to confirm copper acetoarsenite. A total of 406 books from the Winterthur collection were analyzed, and ten were confirmed to contain copper acetoarsenite.

The Library Company of Philadelphia shelves its Americana collection chronologically according to imprint date. Volumes were selected for testing by visual scan of the shelves in the appropriate date range (1830s through 1900). Approximately 80 books bound in green bookcloth or with green paper onlays were tested using handheld XRF. Spectra and bibliographical data were saved for each volume which showed the presence of arsenic and copper. A total of 28 books from the Library Company collection were found to contain arsenic.

The University of Delaware Soil Testing Lab performed quantitative analysis on a destructive sample from one Winterthur Library volume and revealed the presence of significant levels of arsenic. Furthermore, quantitative analysis for arsenic on a dry cotton swab rolled across the surface of the bookcloth indicated that the bookcloth colorant is extremely friable.

Project Researchers

Lead Conservator: Dr. Melissa Tedone

Lead Scientist: Dr. Rosie Grayburn

Contributors:

Emily Guthrie, Winterthur Library Director and NEH Librarian for Printed Books & Periodicals

Jennifer Rosner, Head of Conservation, The Library Company of Philadelphia

Meghan Abercrombie, Winterthur Intern

Philip DePaola, Winterthur Intern

Layla Huff, Winterthur Intern

Sara Leonowitz, Winterthur Intern

Bookmark Designer:

Karissa Muratore, WUDPAC Class of 2020

Consultant:

Michael Gladle, Director of Environmental Health & Safety, University of Delaware

Disclaimer

Copyright 2024. This article describes conservation procedures and is meant to be used as exchange of technical information among trained cultural heritage conservators, and the procedures described herein should not be performed by anyone who is not a trained professional. Further, any advice, graphics, images, and information contained in this page is presented for general educational and information purposes, and to increase safety awareness in connection with the storage and handling of aged books that may contain toxic chemicals, such as arsenic. The storage, handling, and other safety tips included in this page are suggestions only and have been collected by the Poison Book Project of The Henry Francis du Pont Winterthur Museum, Inc. after consultation with scientists and other experts in the conservation field. None of the content in this page has been subjected to a formal peer review and is not intended to be medical or other expert advice or services, and should not be used in place of consultation with appropriate professionals. The information contained in this page should not be considered exhaustive, and the user should seek the advice of appropriate professionals.

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