AFTER THE ENGRAVING BY NORDHEIM OF A DAGUERREOTYPE MADE BY BRADY, IN NEW YORK, ABOUT 1848.
AUDUBON
AFTER HIS LAST PORTRAIT, A DAGUERREOTYPE MADE IN NEW YORK ABOUT 1850. PUBLISHED BY COURTESY OF CHARLES SCRIBNER'S SONS.
John Edward Gray to John Woodhouse Audubon
4 May 1847
Brit. Museum
My dear Sir
I am very sorry that I am so occupied that I cannot undertake to furnish you with the descriptions of the American Mammalia which you have figured here but I think you will find that Dr Richardsons descriptions are so accurate and detailed that you had better copy them for the work than have more imperfect descriptions by a less experienced and minute describer.
at the same time should Dr Bachman on composing the Work want any note or the distinction between any two species or the description of any one wh have not contained in Richardson Work & he will write to me I shall have great pleasure in immediately replying to his request—