Logitech MX Vertical Advanced Wireless Optical Mouse with Ergonomic Design Graphite 910-005447 - Best Buy
Logitech MX Vertical Review - RTINGS.com
Logitech MX Vertical Left and Right Mouse Button Microswitch Replacement - iFixit Repair Guide
The new Logitech Lift is a cheaper, colorful vertical ergonomic mouse with left-handed version and long battery life - NotebookCheck.net News
Amazon.com: Logitech MX Vertical Wireless Mouse – Advanced Ergonomic Design Reduces Muscle Strain, Control and Move Content Between 3 Windows and Apple Computers (Bluetooth or USB), Rechargeable, Graphite : Electronics
Logitech Lift Vertical Ergonomic Mouse, hands on: Compact and comfortable | ZDNET
Logitech's Lift is a vertical mouse that's easier to grasp | Ars Technica