Addressees: Sprague, Harriet C
- Clara L. Clemens to Harriet C. Sprague, 7 or 14 February 1909, New York, N.Y · UCCL13666
- Clara L. Clemens to Harriet C. Sprague, 19 February 1909, New York, N.Y · UCCL13667
- Clara L. Clemens to Harriet C. Sprague, 23 February 1909, Redding, Conn · UCCL13665
- Clara L. Clemens to Harriet C. Sprague, before 11 March 1909, New York, N.Y · UCCL13672
- Clara L. Clemens to Harriet C. Sprague, before 11 March 1909, New York, N.Y · UCCL13671
- Clara L. Clemens to Harriet C. Sprague, 12 or 19 1909, Redding, Conn · UCCL13670
- Clara C. Gabrilowitsch to Harriet C. Sprague, 14 November 1909, Atlantic City, N.J · UCCL13668
- Clara C. Gabrilowitsch to Harriet C. Sprague, 4 December 1909, Atlantic City, N.J · UCCL13669
- SLC to Frank J. Sprague and Harriet Sprague, 26 December 1909 · Redding, Conn · UCCL11912
- Clara C. Gabrilowitsch to Harriet C. Sprague, 19 April 1910, Redding, Conn · UCCL13673
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