F07_P03: Great Britain’s Secret War against the Axis Bletchley Park

1942 June 18, Front side - Envelope from John Richard Perceval to his wife with undercover return address.: Tan envelope (appears yellow via scan) with adhesive stickers in English using black and green ink. At the center is a green adhesive sticker with a "Returned to sender by the censor" notice. Above to the left is cursive handwriting in black ink. Directly above the writing is a black ink overprint cancellation dated June 18, 1942. At the top right is a blue imprinted 2.5-pence stamp depicting George VI facing to the left. The foundation is promptly working to update this scan.
1942 June 18, Front side - Envelope from John Richard Perceval to his wife with undercover return address.

Tan envelope (appears yellow via scan) with adhesive stickers in English using black and green ink. At the center is a green adhesive sticker with a "Returned to sender by the censor" notice. Above to the left is cursive handwriting in black ink. Directly above the writing is a black ink overprint cancellation dated June 18, 1942. At the top right is a blue imprinted 2.5-pence stamp depicting George VI facing to the left. The foundation is promptly working to update this scan.

Name/Title

F07_P03: Great Britain’s Secret War against the Axis Bletchley Park

Entry/Object ID

2007.7.3

Scope and Content

1942 June 18, envelope from John Richard Perceval to his wife with undercover return address.

Context

Bletchley Park, a stately mansion on the outskirts of Milton Keynes about 50 miles northwest of London, was the top secret wartime home of Government Communications Headquarters sometimes called "Station X," where German military codes Enigma and Lorenz were broken. Its undercover address was Box 111 Bletchley. Recently discovered correspondence has revealed additional undercover addresses and layers of censorship to protect its security. Among the personnel assigned to this secret location was John Richard (Dick) Perceval, a linguist and travel writer who had studied at the University of Berlin. There he met and married divorcee Sorina Eiche, the mother of three grown sons, in 1936. Sorina traveled to Switzerland in August 1939 and remained there for the duration of the war, perhaps to avoid internment as an enemy alien. In March 1940, Dick accepted a classified assignment that has never been disclosed. His successive ranks were Pilot Officer, Flying Officer, and Flight Lieutenant in the RAF. This June 18, 1942, cover from Perceval to his wife has a previously unrecorded undercover return address of P.O. Box 444, S.W.D.O., Howick Place, London, S. W. 1. Returned by British censor, contents forbidden, postage refunded.

Collection

Nazi Scourge I: Primary Exhibition

Category

Cover
Philatelic Material

Lexicon

Nomenclature 4.0

Nomenclature Secondary Object Term

Envelope

Nomenclature Primary Object Term

Container, Document

Nomenclature Sub-Class

Writing Accessories

Nomenclature Class

Written Communication T&E

Nomenclature Category

Category 06: Tools & Equipment for Communication

Archive Details

Date(s) of Creation

1942 - Jun 1942

Primary Language

English

Ethnography

Cultural Region

Region

Western Europe

Continent

Europe

Dimensions

Dimension Description

Measurement of the full length and width of the archive.

Width

3-3/4 in

Length

4-3/4 in

Relationships

Related Places

Place

Country

Great Britain

Region

Western Europe

Continent

Europe

General Notes

Note Type

Cataloging Note

Note

C. Walrich - Updated (Dec 30 2025) C. Walrich - Updated Title (Feb 27 2026) C. Walrich - Back-Up Material (Mar 11 2026) C. Walrich - Back-Up PDF (May 7 2026)