Historical clue formulations

• See 26-Across — 2023-08-29
• Independent in Congress beginning in 1991 — 2023-07-08
• See 26-Across — 2022-04-25
• Workshop gizmos — 2005-09-24
• 1988 Heisman Trophy winner — 2001-09-28
• Vermont Rep. Bernard ___, Congress's only Socialist — 2001-07-01