Possible Clues:

• Whitney's engine-making partner
• Military aircraft engine maker ___ & Whitney
• Whitney's engine-building partner
• Dr. Gregory of 'ER'
• Engine maker ___ & Whitney
• Baltimore's Enoch ___ Free Library
• Mekhi Phifer, on "ER"
• He ran out Ponting at Trent Bridge
• Brooklyn's ___ Institute, college of art and architecture
• Karloff, really