haha..When it rains it pours....
Just found an illustration for Lutyens original proposal for The Gallery of Modern Art, which was actually to be in St Stephens Green rather then Iveagh Gardens as I stated.
You can just make out the College of Surgeons in the Background. The illustration is of poor resolution though!
Also, there is a rather nice illustration of his second proposal for the "Bridge Art Gallery:
If you examine the pictures carefully they really give a better idea of just what was proposed and how substantial each flanking structure actually was.
The website won't link but if you go to google images and type "bridgemanart william walcot gallery" you will fiind the illustrations
Apologies for going off topic but I tried pm-ing this info and the e-mails just wouldn't send;)