Possible Clues:

• He wrote many long years ago
• Humorist who wrote 'Progress might have been all right once, but it has gone on too long'
• Architect's unopened grate
• UK guitarist/singer Kate
• Architect establishing name with a second hospital
• Beau —. Ogden —
• 'I think that I shall never see / A billboard lovely as a tree' poet
• Man featured in "A Beautiful Mind"
• Johnny who could see clearly?
• Poet who wrote of the wasp, "I distrust his waspitality"