one copy of engraving ' Men of Progress ' One copy of Scientific American for one year and Remit by postal order draf or express. quarter payable at the office where received. CanadA subscribers must remit with subscription 23 cents Wrn to pay postage. Address all letters and make all Post Office orders or PRESSURE BLOWERS & EXHAUST FANS, 1873-06-14

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one copy of engraving ' Men of Progress ' One copy of Scientific American for one year and Remit by postal order draf or express. quarter payable at the office where received. CanadA subscribers must remit with subscription 23 cents Wrn to pay postage. Address all letters and make all Post Office orders or PRESSURE BLOWERS & EXHAUST FANS, 1873-06-14

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