Earlier in this thread, I noted that some of the early MM photos that were originally hosted on flickr.com could no longer be accessed. Today, out of curiosity, I went directly to the flickr.com website and, after logging in, did a search for the original flickr photos. My recollection is that the photos were originally taken at the MM Austin, TX location. The first two links are to those photos, and they were taken by Griset Photography and are in black and white. The third link is to other photos of MM dough balls/skins. I don't know if the links will work for others, but the only way to know is to post this and see what happens. If the photos appear, the arrows (left and right) can be used to see related photos.
I can see the 5 photos in your first link. It appears that MM dough balls are put into plastic bags at some point in time. I wonder if that is before they are frozen. I also see the dough balls are heavily covered with what appears to be cornmeal. What do you think that string on a wooden handle is for?
I can also see the photos in your second link. The photo under Amy Wood and the caption we are thick in dough at Mellow mushroom almost looks like the dough is yellowish, or not as dark as my MM dough attempts. It says in the one photo of the MM dough balls in a line, that they are the ones that are used for testing batches. The MM pretzels look different in the different photos.
The third link also works to show the photos and captions. Under the caption Making Pizza at Mellow Mushroom April 2010 001 those dough balls look darker.
Do you have any conclusions after looking at all the photos?
I did not have to log in to look at the photos.