on every page, in the background. first, now they're made of icky cardboard crap, which tara says is for the chip they have in them, and then...like every page has images in the background:

boston tea party
american flag
eagle w/ american flag and WHEAT
cactuses
rocky mountains
liberty bell w/ declaration of independence w/...liberty hall?
some old ship + lighthouse + seagull
eagle + bison + rockies + shadow of a bird
mt. rushmore
steamboat on the mississippi + more birds
farm + farmer w/ team of oxen tilling land + more WHEAT (= giganto-wheat)
cowboys w/ longhorns, cattle, windmill, more mountains
a freaking TRAIN
more rockies + bear w/ fish + TOTEM POLE
statue of libery w/ close-up of the tablet she's holding
a palm tree
a satellite, the moon, & earth