Whitby It’s Quicker by Rail. L.N.E.R

Iain Macnab (1890-1967) was a Scottish wood-engraver and painter.
He studied at Glasgow School of Art. In 1925 he became the founding principal of the Grosvenor School of Modern Art.
This poster is very rare, I have not seen it before. It is catalogued in Poster to Poster by Richard Furness.
In good condition, I had it backed on linen in the US.