Backstory: I'm a geoscience undergrad at the moment and have often found it difficult to obtain high-resolution map images from older journal articles to include (and cite!) in written work. A recent example was a simplified lithofacies map from the 1970s - I did my best to rescale the image but once printed it was fuzzy and difficult to read, despite looking okay onscreen. Sort of defeats the purpose of a map, heh. Questions: Is it considered poor form to redraw an older map (still referencing it, of course) if there are no better images available? And would it be a super-big no-no to redraw maps such as these for fun and post them on a blog for others to view/use (again, with appropriate references)? Not talking about updating the information per se, just using something like Illustrator to create a more scalable image. While we're at it, is it okay for me to create maps from someone else's data and post these online (with, you guessed it, references!)? Basically I'm uncertain as to what may constitute infringement here, or whether it could be considered bad etiquette even though it's mainly something for me to do as a hobby. I have seen redrawn maps and diagrams in study materials but am unclear whether permission must be obtained prior to such an undertaking. Apologies if this is posted in the wrong place, just figured Earth Sci folk may have prior experience with this sort of thing. It's summer break here so I can't ask a lecturer.