2GB [1x2GB] Memory RAM Upgrade for the Lenovo ThinkPad R61, R61e, R61i Laptops | eBay
8GB (2X4GB) Memory PC2-5300 667Mhz DDR2 SODIMM RAM for Lenovo ThinkPad R61 at Amazon.com
My First ThinkPad, an R61 running W11, $25 on cl. How'd I do? : r/thinkpad
OFFTEK 2GB Replacement Memory RAM Upgrade for IBM-Lenovo ThinkPad R61 (8933-xxx) (DDR2-5300) Laptop Memory at Amazon.com
IBM Thinkpad T61 RAM Replacement - iFixit Repair Guide
CMS 2GB (1X2GB) DDR2 5300 667MHZ NON ECC SODIMM Memory Ram Upgrade Compatible with Lenovo® Thinkpad R61 Notebook Series - A38 - Walmart.com
2GB 2X1GB Memory RAM for Lenovo ThinkPad R61 Series DDR2 SO-DIMM 200pin PC2-5300 667MHz Black Diamond Memory Module Upgrade System Specific Memory - Newegg.com
Lenovo Thinkpad R61 RAM-Memory (2 Gig) | Replacement Part
CMS 2GB (1X2GB) DDR2 5300 667MHZ NON ECC SODIMM Memory Ram Upgrade Compatible with Lenovo® Thinkpad R61 Notebook Series - A38 - Walmart.com
Tutorial: How to upgrade ram in a T61 Thinkpad - YouTube