Portrait of a Killer: Jack the Ripper—Case Closed that a paper manufacture expert she hired asserts that reams of paper supposedly used by Jack the Ripper to write several letters to Scotland Yard and paper purchased by Sickert's mother bear the same small-press watermark. She also claims that there are matches in the cutter's marks, which are a result of the rough cutting of each quire (or small package) for packaging. A "quire" was usually of 24 sheets. Though Cornwell's book sold many copies, many Ripperologists and other critics argued that Cornwell's theory was far from persuasive. Critics also note that Cornwell has said that she did not
Quill & Quire publishing industry began to grow and flourish. In 1971, Michael de Pencier purchased the magazine from Southam (who had bought it from Seccombe and owned it for just six months). "Quill & Quire" remained with de Pencier as part of the Key Publishers/Key Media stable for 30 years, until its sale in 2003 (as part of a larger transaction involving Key Media) to St. Josephs Corporation, a Canadian-owned and -controlled printing and media company based in Concord, Ontario, which also publishes "Toronto Life". "Quill & Quire" was substantially redesigned in 2006 in an effort led by publisher Alison Jones, editor