In downtown Hannibal, Missouri, on South Main Street.

https://maps.google.com/maps?q=hannibal,+mo&hl=en&ll=39.708936,-91.355208&spn=0.003504,0.008256&sll=39.708986,-91.355245&sspn=0.014081,0.033023&t=h&hnear=Hannibal,+Marion+County,+Missouri&z=18&layer=c&cbll=39.708991,-91.355246&panoid=-w5yhHsoz3V1zG2-XgPGsA&cbp=12,44.92,,0,0.82