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U+237C ⍼ Is (Also) S9576 ⍼

Part 1: U+237C ⍼ RIGHT ANGLE WITH DOWNWARDS ZIGZAG ARROW Part 2: update: U+237C ⍼ angzarr; Part 3: Monotype Mathematical Sorts This is part 4. Many thanks to Sallie Morris at the Science Museum Group, Claire Welford-Elkin at St Bride Library, and Brian Corrigan for their help.

I received a reply earlier this year from their typography collections project curator, Dr. Sallie Morris, who sent back photos of ⍼ appearing before the 1972 series L231 as S16139! While searching for more information on this Index, I found that the Morison Collection also has a copy listed under Morison.MC.Q17, so I once again contacted them and was sent back photos of their “Arrows & Shafts” booklet, dated December 1954, which at this point looks more like a brochure. I also found a Brian Corrigan selling a copy of the Index, so I asked for some photos of “Arrows & Shafts” as well, which they were kind enough to provide.

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