SATURDAY EVENING POST, Philadelphia, Aug. 10, 1850  The front page has what be one of the earliest newspaper prints of a: "Pass In The Sierra Nevada, California" with descriptive text as well. It is taken from Colonel Fremont's book.
Four pages, large folio size, never bound nor trimmed, 3 folds with mild fold & margin wear causing a few holes, foxing and staining to the right portion of the issue, she loss to unrelated portions of the issue.
Folder size noted is for the issue folded in half.