Yeah, that's how I remember it. Q pointed it out a couple times and anons kept adding posts at first. I just noticed the first graphic I ever downloaded on November 2nd is missing a bunch of early posts. Starts with the Crossing the Delaware post on the 31st of October.
Man, that seems like a long time ago.
Can't tell you when Q confirmed it, exactly, but I remember Q being concerned to make sure we had it all. And if we had some wrong, pretty sure Q would have made a point of it.
But, I admit those very first posts have always been the ones that I was a tiny bit less certain about because I don't exactly remember how they got added.