Background images on which to put Learning objectives

Hi All,

I have 2 slides in my very first e-learning module that have quite a bit of text and fall at the beginning of the project. The project starts off with a photo album, looking back theme and I'd like to maintain this on the "Learning Objectives" slide as well as "Expectations for Workers".

I tried to download and crop an image of a polaroid and put text on top but I have to stretch it and it doesn't look good. I've tried Googling "old photographs" and kind of got some nice ones but they don't look nice with text on them. See screenshots.

Any suggestions??