This should be after Karl Bodmer, but it seems to me that it says "Hasler del." to the right here as well, so maybe Hasler was an intermediary.
An original, be it an oil painting or an ink drawing, will come before the print, which is made to make it accessible to more people. If the original is a painting, the text will often say N.N. pinx. [pinxit] for 'N.N. painted it'.