Want family to bring old pictures to our e-party

At our RH we are allowed to decorate the whole place with our family photos. I want to collect some good ones (and then make them all in black and white to give it that vintage feel).

Long story short I want our family to bring the pics to our e-party so we have time to make the copies. (we are just having fam at the e-party)

I was thinking of adding an addition to our invitation on a separate card to be mailed with the invite....

ANY IDEAS on the wording?? Anything would be helpful, thanks!