White is emblematical of holiness and truth. Blue is emblematical of peace and security; bright green of true learning, as being the uniform clothing of nature.
Maine and Massachusetts.

White is emblematical of holiness and truth. Blue is emblematical of peace and security; bright green of true learning, as being the uniform clothing of nature.
Source: Current Superstitions (1896), entry 339.
Fanny D. Bergen, editor.
Modern normalized navigation; the historical attribution above remains unchanged.