High Pressure Steamboat Mayflower. Capt. Joseph Brown. First Class Packet between St. Louis and New Orleans on the Mississippi River, 1855. (G. 3052). Large format lithograph with hand-coloring heightened in gum arabic, on wove paper, matted and framed, 590 x 830 mm sheet. A few surface abrasions to sheet edge left side, a few tiny spots in image, very minor toning from matting, a few short tears upper margin, some very slight toning or spotting from old framing verso, discreet dealer pencil annotations recto and verso.  VERY RARE: Only one example of this print has sold at auction in the last 60 years.