Historical clue formulations

• Nikola Tesla and Thomas Edison? — 2025-12-07
• VOLT, AMP — 2024-12-31
• Victoria and David Beckham, e.g. ... or what 17-, 26-, 47- and 57-Across each have, in a way — 2017-07-11
• Beyoncé and Jay Z, e.g. ... or a hint to 17-, 30-, 44- and 61-Across — 2014-11-18