| 2025-12-27 | Certain wings |
| 2025-04-14 | 90° angles |
| 2024-12-15 | Architectural annexes |
| 2023-03-14 | Building annexes |
| 2023-01-08 | Couple of llamas? |
| 2022-07-18 | Building extensions |
| 2021-11-21 | Yellow belly? |
| 2021-10-07 | What jelly rolls are filled with? |
| 2020-04-24 | Wings |
| 2019-11-10 | Some pipe joints |
| 2019-03-31 | Some plumbing joints |
| 2018-01-29 | Building annexes |
| 2017-07-21 | Lawful ends? |
| 2017-04-23 | Bracket shapes |
| 2017-04-18 | The black square chunk in front of 55-, 60- and 63-Across, and others |
| 2015-10-04 | Some pipe joints |
| 2015-08-27 | Duckbill's tail? |
| 2015-07-29 | Some add-ons |
| 2015-04-11 | Blueprint additions |
| 2015-03-31 | Right-angled additions |
| 2014-11-03 | Pieces with 90-degree bends |
| 2014-03-10 | Right-angle bends |
| 2013-12-22 | Some wings |
| 2012-09-28 | Some brackets |
| 2012-01-31 | Corner shapes |
| 2010-01-05 | Some annexes |
| 2009-02-06 | Direction-changing pipes |
| 2008-12-16 | Right-angle joints |
| 2008-10-27 | Building additions |
| 2008-09-15 | 90 degree pipe joints |
| 2008-06-18 | Building additions |
| 2008-05-20 | Building extensions |
| 2008-04-05 | Wings |
| 2007-12-30 | Wright wings |
| 2007-12-25 | Architects' annexes |
| 2007-05-08 | Right angles |
| 2006-10-30 | Building additions |
| 2006-10-11 | Room extensions |
| 2006-07-16 | Some wings |
| 2006-06-27 | Right-angle bends |
| 2006-03-22 | Some add-ons |
| 2006-01-13 | Some bent pipes |
| 2004-11-08 | Building annexes |
| 2004-08-15 | Turning points |
| 2004-06-21 | Building additions |
| 2004-01-28 | Conduit bends |
| 2003-10-31 | Wings |
| 2003-03-07 | Some joints |
| 2002-11-28 | Corner pieces |
| 2002-06-20 | Wings |
| 2002-05-14 | New wings |
| 2002-03-10 | Some bends |
| 2001-11-30 | Corner pieces |
| 2001-11-12 | Building wings |
| 2001-05-18 | Some extensions |
| 2001-01-28 | Some annexes |
| 2000-01-28 | Some pipe joints |
| 1999-12-19 | Extensions |
| 1999-07-31 | Some bends |
| 1999-02-09 | They're seven positions after today's theme |
| 1999-01-06 | Add-ons |
| 1998-11-09 | Building additions |
| 1998-08-30 | Some bends |
| 1998-08-18 | Building extensions |
| 1998-07-05 | Turning points |
| 1998-05-12 | Additions |
| 1997-12-11 | Connecting pipes |
| 1997-01-15 | Right-angle joints |
| 1996-11-14 | Wings |
| 1996-06-08 | Wren's wings |
| 1995-11-26 | Angled pieces |
| 1995-10-06 | Building wings |
| 1995-05-19 | Home additions |
| 1995-03-22 | Pipe bends |
| 1994-10-12 | Plumbing joints |
| 1994-05-21 | Office workstations, maybe |