This manuscript includes letters, 1834-1864 and uncertain date, of Charles Babbage to John Murray II and John Murray III. Some of the letters concern his publications including “On the economy of machinery and manufactures”, “Table of logarithms” and the Ninth Bridgewater Treatise, with mention also of the calculating engine.

All the letters are arranged alphabetically by correspondent and by date under each name.

Austin, Wiltshire, c1850: folios 1-4;

Australian Direct Steam Navigation Company,1853: folio 5;

Authors’ Syndicate, 1896-1903: folios 6-15;

Avery, J, and Company, 1901: folios 16-23; (1)

Awdry, Charles, 1898-1909: folios 24-27;

Awdry, Frances, 1882: folios 28-29; (2)

Awdry, Frances E., 1898-1899: folios 30-36;

Awdry, William, 1898-1899: folios 37-43; (3)

Aymard, A (Mrs), 1871: folios 44-45;

Aynsley, Harriet, 1885-1888: folios 46-55;

Ayrton, William, 1822-1830: folios 56-65;

A., uncertain date: folio 66;

Babbage, Charles, 1834-1864 and uncertain date: folios 67-105;

Baber, Edward, 1820: folios 106-111; (4)

Baber, T., 1830: folios 112-117;

Autin, P., 1844: folios 118-119.

1. Includes letter, 1901, of T.E. Tebbutt to John Murray IV: folios 18-19;

letter, 1901, of T. Chamberlain to John Murray IV: folios 22-23.

2. Includes letter, 1882, of Frances Awdry to Agnes Bruce: folios 28-29.

3. Includes letter, 1899, of William Awdry to Charles Awdry: folios 39-40;

4. Letters, 1820, of Edward Baber to George Dallas: folios 106-111.