You’ll need to put this in your library for later use. Notice that one of the authors is our Larry Schweikart.
https://www.jstor.org/stable/2123394?seq=1#page_scan_tab_contents
The Panic of 1857: Origins, Transmission, and Containment
Charles W. Calomiris and Larry Schweikart
The Journal of Economic History
Vol. 51, No. 4 (Dec., 1991), pp. 807-834
The financial troubles first appear in George Strong’s diary at the end of August, but really get rolling in September.