Vintage Framed Wintry Night Lithograph 21.75"x15.75"

Vintage Framed Wintry Night Lithograph. Lower left corner says Wintry Night and has the artist signature. Part of the signature is cutoff by the frame. All I can read is "MPSON -" so it may be W M. Thompson? This seems similar to other work of his. 21.75" long x 15.75" wide. Frame has glass over the print. Print has a blue / yellow tone to it. Comes from non-smoking household. Originality: Original. Medium: Lithograph