[Lockings (circular) of Plan 28]. Sheet 2 of 2.
- Babbage, Charles
This notation includes an accompanying draft, in pencil, described as 'general verticals formed by combining the verticals of the three groups'. It is undated, but a date of August 1845 can be inferred from the context of Sheets 1 and 2, numbered as 344 Sheet 2 by Babbage and F.344/2[a] by Bromley.
- Large Format Document