For the table linked from your blog post:
Dick Phillips made at least five different ULF models. The ones I'm aware of are 7x17, 8x16, 11x14 Compact, 11x14 Explorer and 12x20.
You can find detailed specs for four of the Wisner ULF models (8x20 Technical, 11x14 Technical, 12x20 Technical and 20x24 Technical) in the LF Field Camera section of the old B&H Pro Photo SourceBook, which is available for free download from the B&H "Sourcebooks & Catalogs" page:
http://www.bhphotovideo.com/find/FreeCatalog.jsp
Canham 20x24:
http://canhamcameras.com/20x24.html
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