North America shewing New Discoveries 1798 rare map Dilly empty western USA New Map of North America Shewing all the New Discoveries 1798. Issued 1798, London by Dilly. Engraved by J. Russell. The west is almost entirely empty blank aside from a huge lake above Teguayo. Stony Mountains named within Canada but unknown stretching down as the Rockies. No states west of the Mississippi aside from the vast territory so named. Georgia still stretches across to the MIssissippi river. Overall, remains a nice looking example with