- Lahore & Peshawar Railway; 2nd Class Executive Engineer from the Public Works Department was in 1868 employed on the construction of the Lahore & Peshawar Railway 
- Alexandra Bridge, construction of a major bridge for the Punjab Northern State Railway(PNSR) over the River Chenab. The PNSR was the first attempt under the newly formed Public Works Department - Railway Branch to construct the line from Lahore to Peshawar, 270 miles(435km).'Henry Lambert' was the author of a significant Report for the 'Institution of Civil Engineers' covering the period of construction 1871-76. . It is not known the period that Lambert was deployed to this project that was undertaken by the PWD-Railway Branch.
- “British Library Archives and Manuscripts Catalogue” - Search Ref L/F/8/7/637; Retrieved 28 May 2016
- "Minutes of the Proceedings of the Institution of Civil Engineers"; Volume 54 Issue 1878, 1878, pp. 71 ; Retrieved on 8 May 2018