Sources & Our Method

HISTORY, DOCUMENTED

The evidence is part of the experience.

What we can establish

Our exhibits connect recordings to surviving labels, catalogs, manuscripts, photographs and historical scholarship. References accompany the claims they support. A collector's description can provide a useful lead; it does not settle every date or identification.

What remains uncertain

We distinguish documented facts, attributed interpretations and unanswered questions. When sources disagree, we show the disagreement. Where a date is approximate, we retain that qualification. “Not yet located” does not mean “never existed,” and missing evidence does not by itself prove that an object was destroyed.

Original images, clear captions

Historical photographs and scans are preferred. Captions identify the subject, creator when known, date or date range, holding collection and source. A later sleeve or compilation cover is identified as a later edition. Modern reconstructions, if ever used, will be plainly labeled.

Related historical images

Galleries bring together portraits, concerts, recording sessions, broadcasts, venues, programmes and other surviving visual evidence. Captions distinguish a direct connection to the recording from a later portrait or broader historical context.

Every image identifies its subject, date or uncertainty, location when established, source and reuse credit. Photographs of political figures or other notable attendees are included when their relevance is documented. Attendance at a concert does not establish that a particular work was performed; that connection requires a programme, report or other evidence.

Politics in the historical account

We document patronage, censorship, propaganda, affiliations and reception where supported by evidence. Preservation and explanation do not constitute endorsement. Music may have different meanings for its composer, performers, officials and listeners; those perspectives require separate evidence.

Want to explore how recordings persuade? Read Propaganda & Critical Listening → for practical listening questions, historical examples and ways to check a claim.

Newspapers and the contemporary press

Exhibits may include reviews, interviews, concert notices, advertisements, obituaries and reporting about songs, composers and performers. Each entry identifies the publication, date, article title, page where verified, source type and archival link. A later retrospective is distinguished from coverage published at the time.

Press material is evidence of what was reported, advertised or argued. It may contain errors, political messaging or promotional claims. We separate those claims from independently established facts and identify censorship or propaganda context where documented.

Searchable transcripts can misread old print. Quotations and clipping captions should be checked against the original page image; unverified search leads are labeled. Translations are identified, and reproduced scans retain their source and rights credits. An unsuccessful search is recorded as “not yet located,” not proof that coverage never existed.

Sound and provenance

Composition dates, recording sessions, pressing dates and reissue dates are recorded separately. For commercial downloads, the source audio, transfer history, actual included files and available formats must be documented before release.

Image credits in this concept

  • Harris & Ewing, U.S. Navy Band symphony orchestra, 25 November 1935. Library of Congress, LC-DIG-hec-39659. No known restrictions on publication, according to the item record.
  • Electrola EG 6993 label, wartime variant. Scan by Mediatus. Licensed CC BY-SA 3.0; reproduced without alteration. Exact pressing date unconfirmed.

Additional gallery image: Lale Andersen portrait, Wikimedia Commons, Lale.jpg. Source description: private photograph by Artur Beul; author/contributor field: Adrian Michael. CC BY-SA 3.0, unaltered. Conflicting approximate dates are disclosed in the exhibit caption.

Additional gallery image: Marlene Dietrich entertaining Third Army soldiers, 1944, reproduced in The Lorraine Campaign, page 291. U.S. Army Center of Military History, via Wikimedia Commons; identified there as public domain in the United States. Reproduced without alteration. Her connection to “Lili Marlene” is documented separately in the Smithsonian National Portrait Gallery exhibition booklet, page 6.

Help improve an entry

Have a catalog page, a clearer label scan or a source that changes the account? Send a correction with the title and supporting reference.