Yes, as a matter of fact, we do! That interesting link and site photos you posted, DD, is one our favorites even though most of their studies concentrate on the Endicott period of pre-WWI artillery. We always wanted to visit those big guns at Fort Casey on Whidbey Island, north of Seattle, Washington. Finally, in mid-August there was an opportunity. After doing a three day job in Sacramento, CA, we shot up there two see those big, bad 10 Inch Coast Artillery Rifles which had a range of eight miles. We were not disappointed; they are really impressive and the "Disappearing Gun Carriage" machinery was very unusual as well. We explored everywhere, of course, and found a few big shells and a shell lift with an unusual chain drive which lifted those 571 pound shells from the magazine handling room up to the guns. We had a great time there scampering up narrow, ribbon-like, 100 year old concrete stairs which went up to the range finding towers which assisted in laying the guns.
Jeeper1, that's a cool aerial view of the batteries; you can spot the armored roofs of the underground plotting and target acquisition rooms. due east of the westernmost gun.
Regards,
Tracy and Mike