R.T.S.
- Saxe-Weimar, Duke of, [165], [167].
- Schuyler, Madame Philip, [18].
- Schweinitz, Rev. Lewis D. de, [130].
- Sedgwick, Mrs. Theodore, [226].
- Sergeant, John, [173].
- Serra, Abbé Correa de, [117], [138], [152].
- Shewell, Betty, [120]. (Mrs. Benjamin West.)
- Shippen, Chief Justice Edward, [44], [205].
- Shippen, Joseph, [49], [214].
- Shippen, Peggy, [33], [42], [63], [194], [223].
- Shippen, William, [154].
- Shipton, Betty, [19].
- Short, William, [117], [165].
- Simcoe, Major, [223].
- Sims, [216].
- Smith, Abigail, [191]. (Mrs. John Adams.)
- Smith, Williamina, [43], [56], [226].
- Smythe, Hon. Lionel, [74].
- Sneyd, Honora, [30].
- Somerville, Mary, [139].
- Southgate, Eliza, [14], [18], [20].
- Sparks, Jared, [100].
- Stamper, Mollie, [211].
- State in Schuylkill, [11].
- Steuben, Baron, [81].
- Steward, Lieutenant-Colonel Jack, [61].
- Stewart, Mrs. Walter, [226].
- Stirling, Lady, [83].
- Stoddert, Major, [9].
- Stone, Colonel William Leet, [79].
- Strickland, William, [117].
- Swanwick, John M. P., [94], [215].
- Swift, Charles, [223].
- Swift, John, [203], [214].