The MERCER GIRLS, I HAVE 2 PICTURES(gl plate negatives) OF THEM!!?!?

...I'VE GOT 2 GL PLATE NEGATIVES, ONE OF MRS MERCER & ONE OF MISS KINNEY(KENNEY)...the show "HERE COME THE BRIDES" was based on the Mercer Girls. Does anyone know if these are worth anything? If so, to whom? Thank you! :)