- FondoPDE-00026 - LORENZO GATT
- Serie010 - WORKS & PROJECTS
- Sottoserie001 - Drainage Works
- Unità documentaria001 - Information given to Colonel Hemming during his visit to Malta. Includes: Estmates, Statement of Drainage, , Mortality in the Fortified Towns, Pumping Machinery for Drainage Pumping Stations,
- Unità documentaria002 - Concise Diary of Drainage works - 1863-64, 1870, 1871, 1872, 1877, 1885, 1889-1903, 1890, 1894-96,1896, 1897, 1898, 1899-1904, 1901, 1905, 1906,1910
- Unità documentaria003 - Drainage Works of Fortified Towns - carried out in 1875-1885 including 1) letter dated 03.08.1870 from Alex Milne, Admiral, Commander in Chief to HE Lt Gen Sir Patrick Grant 2) letter from Admiral Superintendent A Copper Key to Sir A Milne 3) unsigned letter dated 11.04.1877 from Admiralty to Treasury 4) Letter dated 25.04.1877 from Treasury to Admiralty signed William Law.
- Unità documentaria004 - Drainage Works 1863-1864
- Unità documentaria005 - Drainage Works - Statement showing proposed Assessment of Cost to Malta and Imperial Gov.+ Remarks
- Unità documentaria006 - Other Works in the Three Cities carried out in 1893-1894
- Unità documentaria007 - Reconstruction of the Outfall Sewer between French Creek Pumping Station and the Sea - Report by Osbert Chadwick. Includes Site Plan and Estimates
- Unità documentaria008 - Schedule A - consisting of Letters & Report by J Chamberlain, dated 02.12.1896 & 25.06.1898 to Arth, Lyon Freemantle and his reply to J Chamberlain dated 11.05.1897, report by Major A Graham Thomson dated 21.03.1898
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