2GB Memory RAM Upgrade for the Lenovo Thinkpad R61 Series, T60 Series, T61 Series, X60 Series and X61 Series Laptops (DDR2-667, PC2-5300, SODIMM) at Amazon.com
LENOVO THINKPAD R61 Intel Core 2 Duo 2.00GHz 3GB RAM 80GB HDD Bluetooth 1440x900 | eBay
My First ThinkPad, an R61 running W11, $25 on cl. How'd I do? : r/thinkpad