Playing around with #TiddlyWiki geospatial plugin in context of Liverpool & Manchester Railway.
geojson.io good for featurecollection-level code although not all aspects supported by plugin as yet, e.g. fill colour.
Again, a featurecollection of markers for stations although captions not working as expected, possibly due to my not using an empty wiki as starting point nor entering them as tiddlers.
Also polyline for route and finally a combo of all three. Nice.
This (C) LancsArch shows more of the survey of the early LNWR #CrownStreetMaps with an arrow (red) pointing at what I presume is the building I mistook for the gatehouse. Quite easy to see how they might have opted to shear a bit off. Appears to have been part of the Superintendent's house originally. Gatehouse showing as office/house.