Disney-signey print of Dopey from the Los Angeles premier of Snow White (1937)

My mother claimed that my uncle took her to the premier of Snow White and the Seven Dwarfs and that she obtained the print there. What I know is that it is framed (apparently by a company named DeLand of Los Angeles) and was in my mother's possession from the time of my childhood until her death in 1996. I have had it mounted on a wall since then.