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Title: Historical Map Annotations for Text Detection and Recognition
Description: This data is set designed for testing the performance of text/graphics separation and character recognition algorithms on text in scanned historical map images. Thirty one maps from the nineteenth and early twentieth centuries (1866–1927) were chosen from nine atlases in the David Rumsey Map Collection (http://davidrumsey.com). Most maps are of individual U.S. states, though some are regional and one is of the entire U.S.; most feature little handwritten text. The original MrSid files are converted into uncompressed TIFF images for a manual annotation, stored in JSON format. The authors gratefully acknowledge the David Rumsey Map Collection as the source of the map images, which come with the following notice: Images copyright © 2000 by Cartography Associates. Images may be reproduced or transmitted, but not for commercial use. This work is licensed under a Creative Commons [Attribution-NonCommercial-ShareAlike 3.0 Unported] license (http://creativecommons.org/licenses/by-nc-sa/3.0). By downloading any images from this site, you agree to the terms of that license.
Date Created: 2018
PID: grinnell:23294

Title: The Collembola of North America, north of the Rio Grande : a taxonomic analysis - 4 Volumes
Description: The four-volume 1998 edition of Collembola of North America.
Date Created: 1998
PID: grinnell:32100