2025 modern recap bundle

This bundle is anchored by the one genuinely modern source in the archive — Cem S. Kayatekin’s 2025 ICON journal article tracing Baer’s double-play thermosiphon from the stock pond melter through Cool Cell, Andy Shack, the Davis House 2 studio, and the unbuilt Double Play 2.0. Around it sit the full-text 2000-2004 primary documents the retrospective looks back on (several are complete-document copies of page-scan families in the 2002 bundle). It is the archive looking back at itself.

What is in this bundle

Family	Files	What they contribute
Cool Cell documents	2 files	Full-text 2002 Cool Cell architectural brochure and the background / “Work Leading Up” document (boogie valves, Di-thermal walls, plate tests).
Pool heater / cloudy heat	2 files	Complete July 2002 pool-heater cooling essay and the shutter-controlled ceiling-storage note.
Di-thermal system	2 files	June 2002 “Di Thermal Cool Cell Systems” essay (flowing storage, water vs air) and the Di-Thermal Roofs brochure.
Public-facing notes	2 files	Albuquerque Journal Cool Cell story (Aug 2000) and the Sept 2004 “Dear Shareholders” Double Play letter.
Double play thermosiphon	1 file	Kayatekin (ICON 30.2, 2025) — the academic retrospective that gives the bundle its name.

Why it matters

2025 retrospective + the primary documents it cites = archive continuity

The bundle is a raw-source summary, not a conclusion page. It preserves provenance for the file family and points to the compiled concept pages that already distill the ideas.

See also

• Albuquerque Journal on Baer
• Dear shareholders
• Index
• Steve Baer and the double-play thermosiphon
• 2006–2017 independent work bundle