Walking Papers was a service that allowed you to print out an OSM map, annotate it, and scan your annotations back in so that you could add new features to OSM.
The key feature of walking papers was the ability to very easily create an A4 map printout. It generated a PDF stitching tiles taken OpenStreetMap or a choice of several other OSM-based tile providers.
Walking Papers was designed by Mike Migurski of Stamen Design.
Since June 2017 (and possibly earlier), the Walking Papers service is no longer hosted on walking-papers.org, which now appears to contain unrelated material.
New Field Papers
In 2012 they have launched Field Papers (new) which is continuation of the walking papers concept, with new multi-page atlas feature, and a specially designed printable map style. Field papers largely supersedes Walking Papers. In fact...
Scanning currently broken
|For the past year the scanning stage of walking papers has not been working.|
Supported by editors:
Walking Papers included Potlatch embedded into its main page so you could edit directly after scanning in a printout. On the server it generated a tile layer using the bitmap image of your scanned printout, and using the geolocation information encoded in the 2d barcode, and positioning of the corner symbols.
JOSM also supported walking papers via the plugin: JOSM/Plugins/WalkingPapers. This let you bring in the same generated tiles as a background layer
Documentation and Questions
Some scans may not align themselves correctly to the map, like this one which also has "License status overlay" option turned on. Please help if you know what could cause this.