"Liberal promises not kept"... Stan was technically correct: it was a Liberal promise, and it was not kept: but the project was abandoned, half-completed, by R.B.Bennett's incoming Conservative government. (A precursor of the Avro Arrow?)

Partway along (West 62.1344, North 45.3550) is one of the "Sons of Martha Cairns" erected by Harry McLean (https://churcher.crcml.org/Articles/Article2015_02.html) (Not off topic! The Kipling poem quoted there (in extenso) has been set as a folksong by Leslie Fish and probably others.)