Fourth Report of the Commissioners for the Improvement of the Navigation of the River Shannon, with Maps, Plans & Estimates. Dublin: Alexander Thom, 1839. Large Folio. Pp 136, + folded plans. Quarter cloth paper boards. Covers worn & stained, front hinge tender, contents & plans in good condition. Housed in slipcase.

Includes 53 folded maps & plans. Text complies of the Fourth Report with four sections detailing various estimates & Appendix.

The Shannon Navigation Act of 1835 appointing five Commissioners for the improvement of navigation and drainage who took possession of the whole navigation. Over the next 15 years many improvements were made but in 1849 a railway was opened from Dublin to Limerick and the number of passengers & commercial traffic travelling via canal and river fell dramatically.