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    "Half the money I spend on advertising is wasted; the trouble is I don't know which half." Attributed for a century to John Wanamaker (and in Britain to Lord Leverhulme), but quote historians have found no primary source for either - the earliest traceable versions come from early-1900s advertising trade talk.

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    "Half the money I spend on advertising is wasted; the trouble is I don't know which half." Attributed for a century to John Wanamaker (and in Britain to Lord Leverhulme), but quote historians have found no primary source for either - the earliest traceable versions come from early-1900s advertising trade talk.

    Source

    Advertising trade lore, early 1900s

    Attributed to John Wanamaker (apocryphal)

    Attributed to John Wanamaker / Lord Leverhulme; no primary source found (Quote Investigator, 2022) - earliest traces in early-1900s trade press

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