Image download instructions:

To save JPEG images, click on the link. When the image opens in the browser go up to the browsers 'File' menu and choose 'Save As'.

To save TIFF images, position the cursor over the link. Then, make the popup menu appear: If you are on Windows hold down the right mouse button. If you are on Macintosh, hold down the mouse button for about 1 second. Choose 'Save Target As'.