IBM Thinkpad T61 RAM Replacement - iFixit Repair Guide
2GB [1x2GB] Memory RAM Upgrade for the Lenovo ThinkPad R61, R61e, R61i Laptops | eBay
CMS 8GB (2X4GB) DDR2 5300 667MHZ Non ECC SODIMM Memory Ram Upgrade Compatible with IBM Lenovo® Thinkpad T61, T61P Ddr2 Pc5300 Sodimm - B116 at Amazon.com
Lenovo ThinkPad R61i - RAM Replacement - YouTube
RAM memory for Lenovo ThinkPad R61
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 15" Laptop- 1.8 GHz Intel Core 2 Duo, 4GB RAM, Hard Drive or Solid State Drive, Win 7 PRO
Lenovo ThinkPad R61 15" Laptop Core 2 Duo 1.80Ghz 2GB RAM 500GB HDD DVD Linux AC | eBay
OFFTEK 2GB Replacement Memory RAM Upgrade for IBM-Lenovo ThinkPad R61 (8933-xxx) (DDR2-5300) Laptop Memory at Amazon.com
My First ThinkPad, an R61 running W11, $25 on cl. How'd I do? : r/thinkpad
Upgrading RAM in the ThinkPad R61 - YouTube
LENOVO THINKPAD R61 Intel Core 2 Duo 3GB RAM 160GB HDD WIFI LINUX MINT | eBay