<p>Hopalong Cassidy. March 23, 1949.  "The Secret Of Martin Doon" A strange little man is murdered, just before an important cattle shipment is due to depart. So what is Doon's secret? William Boyd, Joseph Du Val, Walter White Jr. (producer, transcriber), Harold Swanton (writer), Howard McNear.oldtimeradiodvd.com</p>

Hopalong Cassidy. March 23, 1949. "The Secret Of Martin Doon" A strange little man is murdered, just before an important cattle shipment is due to depart. So what is Doon's secret? William Boyd, Joseph Du Val, Walter White Jr. (producer, transcriber), Harold Swanton (writer), Howard McNear.oldtimeradiodvd.com

<p>Hopalong Cassidy. March 23, 1949.&nbsp; "The Secret Of Martin Doon" A strange little man is murdered, just before an important cattle shipment is due to depart. So what is Doon's secret? William Boyd, Joseph Du Val, Walter White Jr. (producer, transcriber), Harold Swanton (writer), Howard McNear.oldtimeradiodvd.com</p>

The Secret Of Martin Doon

Hopalong Cassidy rode the radio air waves from 1950 to 1952. His popularity grew and grew, every time his show was heard. These radio shows, together with his movies and television shows helped make him one of the all-time most popular heroes of western fiction and cinema. His popularity continues to grow each year, as generations new and old delight in the classic tales of this American hero.

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The Secret Of Martin Doon

The Secret Of Martin Doon

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