Help Wanted - Missing Maxis School Lots

[emirkayrak 0]

While playing around in lot editor, somehow I entirely bugged the large elementary, large high and college school buildings and corrupted the files. 
(I have a Steam copy of the game) When I loaded my game it crashed, and when restarted all 3 buildings were gone. 
I used ilives to check for the buildings and they seem to have dissapeared. 

I need default Lot files of these buildings, so i can drag it to my plugins folder and play again in peace. 
I searched and i searched but i couldn't find them. 
Can someone help me? Is there an archive of original maxis lots?

(Yes i can use just an elementary school and a library to max education. But i still want these buildings in my city)