Jeff Widmer's Blog - Canon Scanner – Unable to open TWAIN source
CanoScan 4200F Quick Start Guide
Windows 10 Help Forums
CanoScan 4200F - I need soime help : r/computing
Canon Knowledge Base - Setting the default scanning program for scanning from the operation panel (Windows 7)(MF8000 Series/MF8200 Series/ MF8300 Series/MF8500 Series)
Canon CanoScan 4200F [16/17] Specifications
Canon CanoScan 4200F Flatbed Scanner for sale online | eBay