Historical clue formulations

• Second-largest tech hub in North America — 2025-04-13
• Publishing debut of 1851, with "The" — 2018-12-13
• When repeated, Frank Sinatra title city — 2017-10-09
• Orange avenue in Monopoly — 2017-07-16
• With 40-Across, where Broadway is — 2016-08-09
• With 42-Across, Frank Sinatra signature song — 2016-08-09
• Home of the Belmont Stakes — 2015-06-09
• With 20-Across, where the first-ever crossword puzzle appeared — 2013-12-21
• When repeated, a Las Vegas casino — 2012-10-27
• See 26-/28-Down — 2011-06-02
• Frequent location of 58-/46-Across movies — 2011-05-18
• Rome's home — 2011-02-06
• Buffalo's home — 2007-02-13
• The Big Apple — 1998-12-02
• Amsterdam site — 1994-04-12