| 1234567890 | |
| The Duke of Grafton | LABYRINTHE |
| Philip Hofer | CUMBERLAND |
| C.F.St.J. Hornby and Major Abbey | SAFELYBIND |
| J.P.R. Lyell | DBZXE----O; ['D'=1/10/100; 'E'=5/50, etc.?], 'C'=15?, 'A'=25, 'Y'=35, 'W'=45 |
| Henry Yates Thompson | BRYANSTOLE |
| BPH | KLAGENFURT |
| Harry Elkins Widener | MINERALOGY |
| Chester Beatty | CALEHILPRK |
| [Reported by de Ricci] | TWICKENHAM |
| 'Roger Mifflin' | In Parnassus on Wheels, Christopher Morley had his bookseller Roger Mifflin use the word "manuscript." |
| M Mackey | T--N-E---- |
| Ashburnham | BRAUNSCHWEIG (and x=0) |
| 1234567890 | |
| Thomas Arthur | TAXIDERMYS |
| Bohn | BETHANKFUL (acc. to Casson, 1959) |
| Dawson's | [ask CWD] |
| Dobell | TWMGJRLAN; shillings in lower case, 'D' for £10, 'y' for 10s |
| Evans | until about 1821: JACKBOWDEN then: Greek letters |
| H.P. Kraus | LOEBSCHUTZ [year/month/day | Paid +10% p.a.] |
| Maggs | HARLEQUINS |
| Bernard Quaritch | KINGALFRED |
| William Ridler | Same as Thomas Arthur |
| Sotheby's | KINDBROTHE[RS (?)] |
| Thomas Thorpe | G-N------- and including u, e |
| Messrs. Boone | Greek(?) characters |