The name of this post may have been a bit misleading. This “new” guide is actually from around 1895 and is online at the Niagara University Library web site:
A New Guide To Niagara Falls And Vicinity,
Giving A Full And Complete Description of Niagara Falls, Suspension Bridge, Buffalo, Rochester, Ontario Beach, Toronto, Lockport, Tonawanda, Lewiston, Niagara-On-The-Lake, Chautauqua, And Other Places Of Interest.
By Rand, McNally & Company, Publishers.,
[no date provided, possibly 1895]
Cover-title reads: Illustrated Guide to Niagara Falls, Buffalo and Neighboring Points of Interest
(Digitized by Matthew J. Curry, 2005)
The book has been scanned and turned into PDF files that can be downloaded. Also, all of the images are available separately as well as in the PDFs. It’s very interesting. My favourite picture is probably A Winter Scene at Niagara Falls. where you see a crowd of people down people on the frozen river. We’re certainly not allowed to do that now!