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Letters between correspondents

Frederick Douglass and B F. Blackall

These are the 15 indexed letters between Frederick Douglass and B F. Blackall, with both parties read from the letter itself.

15 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. B F. Blackall to Fredk, Douglass · 1877-05-08
  2. B F. Blackall to Fredk. Douglass · 1877-09-29
  3. B. F Blackall to Fredk Douglass · 1878-03-27
  4. B F. Blackall to Fredk. Douglass · 1878-05-22
  5. B F. Blackall to Fredk Douglass · 1878-06-17
  6. B F. Blackall to Fredk. Douglass · 1878-08-12
  7. B. F. Blackall to Fredk. Douglas · 1878-09-24
  8. B F. Blackall to Fredk Douglass · 1879-07-31
  9. B F. Blackall to Frederick Douglass · 1880-05-13
  10. B. F. Blackall to Frederick Douglass · 1880-05-19
  11. B. F. BLACKALL to FREDK DOUGLASS · 1880-10-16
  12. B.F. Blackall to Hon. Fredk Douglass · 1880-11-16
  13. B F Blackall to Fredk. Douglass · 1880-03-25
  14. B. F. Blackall to Fredk. Douglass · 1881-02-10
  15. B. F. Blackall to Hon Frederick Douglass · 1881-08-06
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