The pages in the scanned PDF file http://commons.wikimedia.org/wiki/File:Houston17RailroadsMeetTheSea.pdf (which originally comes from http://www.archive.org/details/houstonwhereseve00farb) appear to consist of high-resolution b&w (well, black-and-transparent, really) images overlaid on top of lower resolution color images. However, in the thumbnails only the low resolution color layer is shown, so that for example page 9 appears completely blank, even though it actually contains a substantial amount of text.
Version: unspecified
Severity: normal
URL: http://commons.wikimedia.org/w/index.php?title=File:Houston17RailroadsMeetTheSea.pdf&page=9