Related Clues:

• Use a laptop
• A, B, or O
• Work on the keyboard
• Like Karloff and Lugosi, notably
• Work on a text
• Use a Selectric
• Work at a keyboard
• Used the Selectric
• A or O, at the blood bank
• Important transfusion datum
• Compose, in a way
• Use an Underwood
• Keyboard
• Blood __
• Disclosure to a dating service