4. A roll marked Appendix No. 1, containing the narrative of the field
operations of the division of Professor Renwick.
5. A tin case containing the detail of the surveys of the division of
Professor Renwick.
In reply to your inquiry in relation to the disposition of the said
papers, I am directed respectfully to suggest that all which it is
absolutely necessary to lay before Congress are the items 1 and 2,
which, with a general map now in preparation, will contain all that will
be of any general public interest.
The portfolio (No. 3) and the box of maps and profiles (No. 5) should
remain on file in the Department; and while a part of the drawings in
the former may be useful for illustration, the latter will be superseded
by the general map, in which will be embodied all that they contain of
importance to the question at issue.
Appendix No. 1, specified as No. 4 in the above list, will probably be
demanded hereafter to give authenticity to the conclusions of the report
(No. 1). It ought not, however, to be communicated until the Appendices
Nos. 2 and 3, containing the operations of the divisions of Messrs.
Graham and Talcott, are handed in; and of the three no more than a
limited number of copies will be useful.