Temple De Hirsch Sinai
Jewish congregation in Seattle and Bellevue, Washington, U.S.

Temple De Hirsch Sinai is a Reform Jewish congregation with synagogues at campuses in Seattle and nearby Bellevue, Washington, in the United States. The congregation was formed as a 1971 merger between the earlier Temple De Hirsch (Seattle, founded 1899) and Temple Sinai (Bellevue, founded 1961) and is the largest Reform congregation in the Pacific Northwest.
The old Temple De Hirsch building (or Old Sanctuary) was listed on the National Register of Historic Places, but was demolished in 1993. Part of the façade remains.
Temple De Hirsch
When Seattle's "quasi-Reform" Ohaveth Sholum Congregation, founded 1889, disbanded because of financial hardships after the Panic of 1893, Seattle's liberal Jews were left without a synagogue. Temple De Hirsch was founded as a specifically Reform synagogue in 1899, named after Jewish philanthropist Baron Maurice de Hirsch.
Construction of a synagogue was begun at Boylston Avenue and Marion Street in Seattle. A cornerstone was laid in 1901, and a basement was built; the congregation held services in the vestry, but rapid growth of the congregation led to the construction of a larger building at Union Street and 15th Avenue.
Construction on the new Temple De Hirsch designed by Seattle-based architect Julian F. Everett was begun in 1907, completed in 1908, and dedicated on the congregation's ninth anniversary, May 29, 1908. An adjacent Temple Center opened in 1924, housing a religion school and other organizations; a wing was added in 1951.
Begin with the source’s own compact description: “Temple De Hirsch Sinai” is jewish congregation in Seattle and Bellevue, Washington, U.S. The dossier treats that line as a proposition to test through Temple, Hirsch and Sinai, not as a finished interpretation.
Why this record matters
The phrase “jewish congregation in Seattle and Bellevue, Washington, U.S” supplies a clear boundary for inquiry. It also exposes the unanswered questions: who defined that boundary, when it became stable and which sources sit outside it.
Vocabulary and entity names are the principal evidence signals here, because they determine the precision of every later search. The source revision retrieved here is dated Aug 1, 2026. The linked authority identifier is Q7698513. Authority coordinates are 47.614, -122.312. 1 of 2 selected statements include explicit references; 0 carry qualifiers and 0 use preferred rank. The first chronological checks are 1971, 1899, 1961 and 1993.
A concise general-reference account can conceal disagreements about scope, terminology or the weight assigned to individual sources. The source lead contains qualifying language; that uncertainty should survive quotation, summary and reuse. Authority statements aid reconciliation but still require their own references, qualifiers and ranks to be checked.
How to read it
Use the entry as an orientation point, then follow its citations and revision history. Names, dates and institutional relationships should be checked against the original record.
- Subject orientation
- Search vocabulary
- Locating named sources
The closest primary source, responsible institution and strongest cited specialist reference.
Three-step research path
- Establish the record: confirm the title “Temple De Hirsch Sinai”, its source revision and the description used here.
- Expand the search: follow Temple De Hirsch Sinai primary sources, Temple De Hirsch Sinai archive and Temple research across catalogues and specialist indexes.
- Test the account: compare the strongest cited source with the responsible institution’s current record and note any disagreement.
Questions for further research
- Which source most directly establishes the central claim about “Temple De Hirsch Sinai”?
- Which cited source is closest to the event, object or claim?
- What terminology or title could unlock a more precise catalogue search?
Search terms from this dossier
This entry incorporates text from “Temple De Hirsch Sinai” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.