Thank you so much for your help! So has the Mississippi changed its course quite a lot since the Civil War or is it more or less where it was with maybe an oxbow bend added or subtracted here or there? Because I've found widely divergent reports about how many miles this or that was upriver versus now. For example, I have found several things saying Fort Pillow was 65 miles upriver from Memphis or something like that and currently its location appears to be about only 46 miles from Memphis by river. Thanks again!