Every month I add a new post with a gallery of book images that link to their library catalog records. Every time I add a new post with this kind of gallery, I'd like to also be able to add those gallery images to a comprehensive gallery on another page. I know how to add more than one gallery to a page, but I'm wondering if there's anyway to have the images in those multiple galleries become combined so that they can be ordered alphabetically by title? In this way, I'd like to be able to maintain a page with all the linked book covers in one place, as each new gallery is uploaded. (I'd also like to be able to remove older ones once they are no longer valid.)
This may not be a current feature of the plugin, but perhaps it might be possible in an update? For example, if the shortcode could work like this: [gallery id=4644,4212 order="ASC" size="medium" columns="3" orderby="title"] where the multiple gallery ids would result in the contents of those galleries being combined into one ordered list.
Any suggestions on how I could accomplish what I'm trying to do? Here's a link to an example of how I'm using the plugin: http://www.thomasmemoriallibrary.org/2012/09/15/twenty-four-titles-added/