Early American Chrononauts is a stand-alone prequel to Chrononauts, also from Looney Labs. The all-new TimeLine begins just before the American Revolution in 1770 and continues through the Civil War, stopping at 1916. As with Chrononauts, players travel through time to change linchpin events, patch paradoxes, and collect artifacts.
This is a stand-alone game, but Early American Chrononauts's TimeLine can fit together with the Chrononauts TimeLine to combine the two games into one huge game.
Did you think to put your Early American Chrononauts cards in Yu-Gi-Oh! card sleeves? And then what? Where do you put them now? The original box will not be able to hold them anymore so this are two boxes to carry this game around, while the cards are well protected inside those sleeves. Just print this PDF and cut along the edges and use double sided tape (I worked this to be the best method but YMMV) to put them all together.