The configurotype : a hat to fit the head securely and yet comfortably can only be obtained by the aid of "the configurotype," invented and most successfully used by Robert Heath for forty years Caution- an imitation is now being extensively advertised... / Robert Heath.

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The configurotype : a hat to fit the head securely and yet comfortably can only be obtained by the aid of "the configurotype," invented and most successfully used by Robert Heath for forty years Caution- an imitation is now being extensively advertised... / Robert Heath. Public Domain Mark. Source: Wellcome Collection.