John and Henry Miller were American booksellers and publishers based in Columbus Ohio. The J. & H. Miller firm was active during the mid 19th century. Though not specifically map publishers, the Millers published a number of historical works, many of which contained folding maps. The Miller firm is especially well known for its attention to African American related publications in the years preceding the Civil War.
Click here for a list of rare maps from J. & H. Miller.