| 1 | Letter from Alexander Graham Bell to Mabel Hubbard Bell, April 10, 1877 |
| 2 | Letter from Alexander Graham Bell to Mabel Hubbard Bell, April 12, 1877 |
| 3 | Letter from Alexander Graham Bell to Mabel Hubbard Bell, April 12, 1877 |
| 4 | Letter from Alexander Graham Bell to Mabel Hubbard Bell, April 17, 1879 |
| 5 | Letter from Alexander Graham Bell to Mabel Hubbard Bell, April 18, 1877 |
| 6 | Letter from Alexander Graham Bell to Mabel Hubbard Bell, April 18, 1879 |
| 7 | Letter from Alexander Graham Bell to Mabel Hubbard Bell, April 20, 1879 |
| 8 | Letter from Alexander Graham Bell to Mabel Hubbard Bell, April 22, 1877 |
| 9 | Letter from Alexander Graham Bell to Mabel Hubbard Bell, April 27, 1877 |
| 10 | Letter from Alexander Graham Bell to Mabel Hubbard Bell, April 3, 1879 |
| 11 | Letter from Alexander Graham Bell to Mabel Hubbard Bell, April 4, 1879 |
| 12 | Letter from Alexander Graham Bell to Mabel Hubbard Bell, April 5, 1879 |
| 13 | Letter from Alexander Graham Bell to Mabel Hubbard Bell, April 6, 1877 |
| 14 | Letter from Alexander Graham Bell to Mabel Hubbard Bell, April 7, 1877 |
| 15 | Letter from Alexander Graham Bell to Mabel Hubbard Bell, April 8, 1879 |
| 16 | Letter from Alexander Graham Bell to Mabel Hubbard Bell, April 9, 1877 |
| 17 | Letter from Alexander Graham Bell to Mabel Hubbard Bell, August 1878 |
| 18 | Letter from Alexander Graham Bell to Mabel Hubbard Bell, August 20, 1878 |
| 19 | Letter from Alexander Graham Bell to Mabel Hubbard Bell, August 21, 1878 |
| 20 | Letter from Alexander Graham Bell to Mabel Hubbard Bell, December 1878 |
