42W3784 IBM System Board (Motherboard) for ThinkPad T61 (Refurbished)
44C3924 42W7649 42W7873 Main Board For Lenovo Thinkpad T61 Laptop motherboard 14'' 965PM DDR2 cpu NVS140M graphics - Newegg.com
T700 crowdfunding: a new custom motherboard for good old T60/T61 Thinkpads - with 11th gen Intel and up to 64GB of DDR4 - has a great chance of coreboot opensource firmware support
Lenovo 43Y9252 Thinkpad Notebook R400 System Board Motherboa