Please note that some of the books may need to have the page size changed for ease in viewing online, This is done through successive uses of the "Reduce" or "Enlarge" options located in the controls beneath each page image.
Also, page images may be advanced by clicking on the page image itself without having to use the direction buttons that are in the controls. The general directon of viewing can also be changed through using the "Forward" or "Reverse" options.