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Show . . , , , . j ( Autogiro Relay Tried as Airmail Speedup ft-" ' j r - " ' 's ) ' i f 1 - i" fT ' JW'LC S.J ' - '''''' ' ' W v--', . '"A' Alighting, buglike, on the rool of the Chicago postoffice building, 14 stories up, Pilot Johnny Miller's . wingless autogiro is pictured completing an experimental delivery of airmail from the Chicago airport. air-port. With the eight-mile flight requiring only five minutes as against 40 by truck, Postmaster Ernest J. Kruetgen said the experiment proved that regular service ol the type could be established. The flight was held in connection with National Airmail Week and was the first rooftop landing ', in Chicago. . ; , . , : |