Historical clue formulations

• Word with body or work — 2024-06-30
• Kind of signal — 2023-10-06
• Opposite of plain — 2023-08-25
• Tied up — 2023-06-30
• Kind of phone signal that's nearly obsolete — 2022-11-07
• Tied up — 2022-03-10
• Occupied with many things — 2021-06-29
• Packed — 2020-04-24
• On another call — 2018-12-30
• Ornate — 2015-08-23
• Tied up, as a phone line — 2014-12-15
• Tied up — 2010-09-17
• At it — 2010-06-22
• Like the proverbial beaver — 2010-06-01
• On the go — 2006-05-16
• Like a madras pattern — 2006-03-15
• In use — 2006-01-08
• Toiling away — 1998-05-30
• Like some signals — 1996-08-16
• Not free — 1995-01-08
• Overdecorated — 1994-02-08