ROB/1 ROB/2 & ROB/3 are hard backed volumes, which are in a fair condition. Some volumes have been conserved and these are in a good condition. ROB/3 are drawings, which are in a fair condition.ROB/5 & ROB/6 are a series of files, which are also in a fair condition. Archive of Robert Stephenson & Co Ltd
Untitled. [Vertical positions of some of the wheels of Plan 28a. Notation 348 and 331 cycles]. Sheet 12 of 13.
List of the combinations in division performed as in Notation 290, with the cycles in which they occur. Sheet 2 of 4.