Hi Cathy, It is a good idea to allow fetching EMDB maps by id in the current File / Fetch by ID dialog. Their are two issues related to the large size of some maps that I would like to solve to make that work well. First I would like Chimera not to freeze while the fetching is done. That is what currently happens when fetching files. Instead it could show a progress dialog with a cancel button (like a web browser) and open the map when it finally arrives. Second I would like the map to be saved on your local machine so that you don't have to fetch the same large file more than once. Perhaps the way that would work is the the first time you fetch any file it asks you where to save this and future fetched files, and there will be an option not to save them. This would be remembered in your Chimera preferences file. When you subsequently used the fetch dialog it could first look in the directory where you save fetched files and use the copy there if available. Thanks for the suggestion. It is on my requested features list. Tom