With reference to the railway line on that map, if you follow it to the end at Birkenhead it shows it ending exactly where Green Lane station is now. The map is dated 1840, but in September 1840 the railway company opened Grange Lane station, over 1/4 mile further on, on the other side of the inlet of Tranmere Pool. Since there is no record of a terminal station ever at Green Lane, it must mean that the map was made during the construction of the railway.
Yes, there's quite a lot of other interesting detail on that map.
Look a bit further across between Bidston and Claughton and you'll also see the little known Flaybrick Railway which ran down towards Wallasey Pool.
Sorry for going off topic!
