Addressees: Barr, Robert (Luke Sharp)
- SLC to Robert Barr (Luke Sharp), 29 October 1887 · Hartford, Conn · UCCL14068
- SLC to Robert Barr, 10 February 1897 · London, England · UCCL10450
- SLC to Robert Barr, 16 September 1897 · Weggis, Switzerland · UCCL10600
- SLC to Robert Barr, 18 September 1897 · Weggis, Switzerland · UCCL10669
- SLC to Robert Barr, 29 September 1897 · Vienna, Austria · UCCL05293
- SLC to Robert Barr, 1897 · Unknown place · UCCL13086
- SLC to Robert Barr, 18 June–13 July 1907 · London, England · UCCL11300
- SLC to Robert Barr, Unknown date · Unknown place · UCCL12607
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