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That label once read: Chretien and Bro, Main St., Buffalo, Wholesale and retail, Tube colors, sketching paper, millboard, stable brushes, vanishes, etc.
The same label appears on paintings (at least one I've seen) from the late 1880s; 1887, to be specific.
Don........
PS: Charles F. Chretien co-owned a painting supply store in Buffalo, Chretien Brothers & Co. William C. Chretien and Louisa Chretien were also owners of the store. A Buffaloe city directory also shows their business listed in 1883.