For this reason I have taken to simply making an image of the title page as shown above. In hindsight, I should have added a comment at the bottom that it was obtained digitally on GoogleBooks along with the date of download.
The next image contains the first part of the Act that authorized the organization of the railroad in 1867. I usually try and include a page number in these images if I can. It was easy enough in this case.
The act does name the individuals who are in charge of setting up the rail line. I'm not familiar with any of them and if they were residents of the area, I don't know (my own family was never involved in anything requiring this much capital or political clout--grin!). The Act goes into more details about the organization, record keeping, and financing of the railroad.
Individual townships could purchase stock in the company (after the railroad had partially built it's facilities and had no debt on those facilities). But only certain townships were mentioned as shown on page 625 of the act
The genealogy takeaway from this is to make certain you save images in a fashion that includes documentation. The other takeaway is that there have always been politics, which may be the reason that the southern half of Hancock County and the entire portion of Adams County where the line passed through are not mentioned.