In the late 1990's I was curating a project to scan in every LEGO instruction and catalog booklet. One big problem was Moiré patterns. 300dpi seemed to maximize

In the late 1990's I was curating a project to scan in every LEGO instruction and catalog booklet. One big problem was Moiré patterns. 300dpi seemed to maximize the artifacts and higher dpi resulted in images that were too large to use on typical displays of the time (not to mention most users were on 28-56kbps modems!) I settled on recommending 100-150dpi which eliminated most of the artifacts but still gave usable image size/detail. Then there were concerns about what LEGO (lawyers) would think about it. Because of this it originally didn't have thumbnails or any html on that part of the site. Just images in a directory structure exposed by mod_autoindex which give it a very utilitarian, non-commercial feel. Those fears were soon put to rest when I learned that LEGO customer service was referring people to the site when customers called in to request replacements for lost instructions. That archive lives on today at http://www.peeron.com/ http://www.peeron.com/ (not my site)