Digitization

Technical analysis by conservation scientists revealed the presence of arsenic permeating the ledger book. Protective equipment was used during photography to protect National Portrait Gallery staff members from potentially harmful exposure.

Conservation scientist permeating the ledger book
Photographs taken during digitization of the ledger book document the precautions taken to minimize exposure to arsenic.

Kimberly A. Harmon, CIH Industrial Hygienist Office of Safety, Health, and Environmental Management (OSHEM)
Conservation scientist permeating the ledger book
Photographs taken during digitization of the ledger book document the precautions taken to minimize exposure to arsenic.

Kimberly A. Harmon, CIH Industrial Hygienist Office of Safety, Health, and Environmental Management (OSHEM)
Conservation scientist permeating the ledger book
Photographs taken during digitization of the ledger book document the precautions taken to minimize exposure to arsenic.

Kimberly A. Harmon, CIH Industrial Hygienist Office of Safety, Health, and Environmental Management (OSHEM)
Conservation scientist permeating the ledger book
Photographs taken during digitization of the ledger book document the precautions taken to minimize exposure to arsenic.

Kimberly A. Harmon, CIH Industrial Hygienist Office of Safety, Health, and Environmental Management (OSHEM)
Conservation scientist permeating the ledger book
Photographs taken during digitization of the ledger book document the precautions taken to minimize exposure to arsenic.

Kimberly A. Harmon, CIH Industrial Hygienist Office of Safety, Health, and Environmental Management (OSHEM)
Technical scanning equipment
Photographs taken during digitization of the ledger book document the precautions taken to minimize exposure to arsenic.

Kimberly A. Harmon, CIH Industrial Hygienist Office of Safety, Health, and Environmental Management (OSHEM)
Section of ledger book page
Photographs taken during digitization of the ledger book document the precautions taken to minimize exposure to arsenic.

Kimberly A. Harmon, CIH Industrial Hygienist Office of Safety, Health, and Environmental Management (OSHEM)
Section of ledger book cover
Photographs taken during digitization of the ledger book document the precautions taken to minimize exposure to arsenic.

Kimberly A. Harmon, CIH Industrial Hygienist Office of Safety, Health, and Environmental Management (OSHEM)
Ledger book cover opened by conservation scientist
Photographs taken during digitization of the ledger book document the precautions taken to minimize exposure to arsenic.

Kimberly A. Harmon, CIH Industrial Hygienist Office of Safety, Health, and Environmental Management (OSHEM)
Ledger book being opened by conservation scientist
Photographs taken during digitization of the ledger book document the precautions taken to minimize exposure to arsenic.

Kimberly A. Harmon, CIH Industrial Hygienist Office of Safety, Health, and Environmental Management (OSHEM)
Conservation scientist permeating the ledger book
Photographs taken during digitization of the ledger book document the precautions taken to minimize exposure to arsenic.

Kimberly A. Harmon, CIH Industrial Hygienist Office of Safety, Health, and Environmental Management (OSHEM)
Section of ledger book page
Photographs taken during digitization of the ledger book document the precautions taken to minimize exposure to arsenic.

Kimberly A. Harmon, CIH Industrial Hygienist Office of Safety, Health, and Environmental Management (OSHEM)
Section of ledger book page
Photographs taken during digitization of the ledger book document the precautions taken to minimize exposure to arsenic.

Kimberly A. Harmon, CIH Industrial Hygienist Office of Safety, Health, and Environmental Management (OSHEM)
Conservation scientist permeating the ledger book
Photographs taken during digitization of the ledger book document the precautions taken to minimize exposure to arsenic.

Kimberly A. Harmon, CIH Industrial Hygienist Office of Safety, Health, and Environmental Management (OSHEM)
Conservation scientist permeating the ledger book
Photographs taken during digitization of the ledger book document the precautions taken to minimize exposure to arsenic.

Kimberly A. Harmon, CIH Industrial Hygienist Office of Safety, Health, and Environmental Management (OSHEM)
Opened ledger book laying equipment
Photographs taken during digitization of the ledger book document the precautions taken to minimize exposure to arsenic.

Kimberly A. Harmon, CIH Industrial Hygienist Office of Safety, Health, and Environmental Management (OSHEM)
Conservation scientist permeating the ledger book
Photographs taken during digitization of the ledger book document the precautions taken to minimize exposure to arsenic.

Kimberly A. Harmon, CIH Industrial Hygienist Office of Safety, Health, and Environmental Management (OSHEM)
Conservation scientist permeating the ledger book
Photographs taken during digitization of the ledger book document the precautions taken to minimize exposure to arsenic.

Kimberly A. Harmon, CIH Industrial Hygienist Office of Safety, Health, and Environmental Management (OSHEM)
Front cover of closed Ledger book
Photographs taken during digitization of the ledger book document the precautions taken to minimize exposure to arsenic.

Kimberly A. Harmon, CIH Industrial Hygienist Office of Safety, Health, and Environmental Management (OSHEM)
Conservation scientists permeating the ledger book
Photographs taken during digitization of the ledger book document the precautions taken to minimize exposure to arsenic.

Kimberly A. Harmon, CIH Industrial Hygienist Office of Safety, Health, and Environmental Management (OSHEM)
Conservation scientists permeating the ledger book
Photographs taken during digitization of the ledger book document the precautions taken to minimize exposure to arsenic.

Kimberly A. Harmon, CIH Industrial Hygienist Office of Safety, Health, and Environmental Management (OSHEM)