I was kindly bought two sets, one being Puzzletown – Lowly Worm’s Rail & Roadway, the other being Puzzletown – Dr. Lion’s Medical Centre.  The sets are mixed up, so will be trying to discover, which piece goes with which set.

This is “Set E” and hails from 1976.

More info: https://richardscarrycollector.car.blog/other/puzzletown-series/set-e-puzzletown-lowly-worms-rail-roadway-info/