Coloured drawings by John Joly of air valves, Dec. 9, 1880, of G. S. and W. R. railway level-crossing gates, April 2, 1881, of 2 inch water sluice valve, Oct. 14, 1880 and of Rochester swing bridge, Feb. 24, 1882, and of other bridges, and Thames and Liffey river walls.
| Format: | Manuscript |
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Location
Dublin: Trinity College Library, Rolls under T
