Fellow historic system owner Johannes Thelan has moved his IBM 1800 system into its new home and is beginning its restoration. This system includes many peripherals including 2311 disk drives. There were no ALDs with the system, logic diagrams that are essential to diagnose and repair the machinery.
Fortunately another 1800 owner, Bob Rosenbloom, has the documents for his machine. While it is not identical, lacking mag tape support for instance, its manuals would be close enough to work from. Bob made scanned versions of the manuals available to Johannes.