With Malcolm, finalized creation of images in various sizes needed for site (thumbnail, 500px wide, 1024px wide, original for images of artefacts, maps etc., thumbnail, original for images of pages of documents) and uploaded those to dev site.
Modified transform.xsl, generatePageImages.xsl and generateRelatedDocumentList.xsl files to get paths correct for various invocations of images.
Image page as related document: entry gets thumbnail (which when clicked on displays 1024px wide image in overlay div with next/prev/close controls) and full entry link, when when clicked on displays page for that image with 500px wide version, when that version is clicked on, displays original jpg.
Text page: page images display at bottom of page as thumbnails. Currently when they are clicked on, just displays the original jpg, but eventually when they are clicked on they will display the original jpg in the overlay with the next/prev/close controls.