Sale Of The Main Line: Letters On The Subject Of The Sale Of The Main Line Of The Public Improvements is a book written by Edward McPherson in 1857. The book is a collection of letters written by McPherson, who was a prominent lawyer and politician at the time, on the topic of the sale of the Main Line of the Public Improvements. The Main Line was a series of canals and railroads that connected Philadelphia to Pittsburgh, and it was owned by the state...