Use a high speed page feed scanner like the DR-2010C from Canon. It can scan up to 20 pages per minute and automatically crops the scan image to the document size. You can get it from $370- from Amazon (amongst others)

If you have thousands of photos to scan it will be cheaper to buy this scanner than to use a service like Scancafe. 1680 photos at Scancafe will cost $370-. If you factor in your selling price your breakeven point will drop to about 1000 photos.

What's the best way to scan in hundreds of pictures?
I try to create proceedings with a uniform title page for individual pdfs that I get from the authors. I use pdfpages for this. The individual pdfs are included and I add title information (not shown in the example below). I have one paper that looks fine, but when I include it, the result does not contain the small caps letters in the attribute value matrices (see figures on page 7 and 8).

\documentclass{article}
\usepackage{pdfpages}
\usepackage[utf8]{inputenc}
        \usepackage{hyperref}
        \setcounter{page}{335}
        \begin{document}
\includepdf[pages=-,pagecommand=\thispagestyle{plain}]{Includes/yatabe.pdf}
        \end{document}


This is the paper: yatabe.pdf 

What I get from including is yatabe-broken.pdf
