How To Print photos from these web pages:
Select the image you want by just clicking the thumbnail to get the reasonable sized picture such as:
Click "Print Preview"
This shows you how it should look on the page, and is always worth checking before using real printing ink and paper.
Click "Print" (or Close, then "File" then "Print")
This wont give you the highest resolution but it is quick and may be good enough.
OR Where a "Download" option is available, Click "Download" :
This has the highest resolution of all but will take longer to download.
You will probably need to use some software to rescale the picture to your paper size (e.g. A4).
It is possible that the printer dialogue box offers you the option of "fit to Page", so this will fix it. (my printer offers this under the "Layout" tab).