Revisit pioneer poster image formatting

[flannery-denny]

Now that we are including some images that have been rasterized and others that have not, I wonder whether we'd consider not rasterizing any. I know that a lot of hard work went into these images. And, I still don't think the pioneers of color are as "readable" as the white pioneers using this process and I wonder whether we could live with a design that just has uniform backgrounds. I assume this wouldn't be a huge amount of work because the OG images are saved somewhere.

(More specifically, I am currently rereading all of the posters to identify our most accessible subset and learned that I was completely confused about the identity of one of our pioneers based on the image we are including, having looked at the images of these pioneers a million times and read their stories far fewer times.)