Lenovo Thinkpad T61 RAM-Memory (2 Gig) | Replacement Part
IBM Thinkpad T61 RAM Replacement - iFixit Repair Guide
4GB 2X2GB Memory RAM for Lenovo ThinkPad T Series T61 ( Type 7665 ) 200pin 667MHz PC2-5300 DDR2 SO-DIMM Black Diamond Memory Module Upgrade System Specific Memory - Newegg.com
RAM memory for Lenovo ThinkPad T61p
1st Thinkpad - T61 - Intel Graphics, 2.00ghz, 8GB ram, 80GB hdd, Windows XP.. I love it. : r/thinkpad
IBM Thinkpad T61 RAM Replacement - iFixit Repair Guide