Seagate Technology - Wikipedia

ExcelStor Technology - Wikipedia

Wikipedia hard drive history Archives

Seagate ST-251 - Higher Intellect Vintage Wiki

File:Seagate ST351A-X - controller - Texas Instruments 12655-501-1957.jpg - Wikimedia Commons

Fun Projects of Various Types: TVS diode and the dead hard drive

Seagate ST-225 - Higher Intellect Vintage Wiki

Microdrive - Wikipedia

ST506/ST412 - Wikipedia

List of defunct hard disk manufacturers - Wikipedia