How do I download a single-page high resolution image?

To retrieve a static JPG image from any page in BHL, use the following:
http://www.biodiversitylibrary.org/pagethumb/pageid,width,height. For example,
http://www.biodiversitylibrary.org/pagethumb/[pageID],[width],[height] (i.e.
https://www.biodiversitylibrary.org/pagethumb/12723148,400,600). If width and height values are not specified, the image returned will default to 200W and 300H. Note that because of how the Internet Archive’s image servers fulfill requests, the actual images returned will be close to the specified dimensions, but not exact.

To retrieve a full-size, full-resolution JPG image of any BHL page, use the following: http://www.biodiversitylibrary.org/pageimage/pageid. For example, http://www.biodiversitylibrary.org/pageimage/1000000.

Then right-click on the image to save it to your computer.