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Letters between correspondents

Wm. H. H. Hart and Frederick Douglass

These are the 5 indexed letters between Wm. H. H. Hart and Frederick Douglass, with both parties read from the letter itself.

5 entries; every one listed below. Several letters may link to the same folder.

Listed in the derivation’s order: year, then letter ID; undated letters first. Not chronological within a year.

  1. Wm H.H. Hart to Fredk. Douglass · 1887-08-30
  2. Wm. H. H. Hart to Honorable Frederick Douglass · 1890-02-14
  3. Wm. H.H. Hart to Frederick Douglass · 1894-02-06
  4. Wm H.H. Hart to Frederick Douglass · 1894-02-06
  5. Wm. H. H. Hart to Frederick Douglass · 1894
How this list was derived

Tier 1: derived from the published letters index, the reviewed correspondent groups and the reviewed place list by the rules below — no inference, no model. Post-fold (sitting 2026-09-05): 169 reviewed correspondent groups; 2090 printed forms remain groups of one below the review floor, disclosed. Corpus version 5db27b8755bd.

Rule: letters carrying both parties (the boundary sentence), grouped by the unordered pair of correspondent groups; see the builder

SELECT id FROM letters WHERE (sender_group = :person_a AND recipient_group = :person_b) OR (sender_group = :person_b AND recipient_group = :person_a) ORDER BY year, id