The Radio Boys at Mountain Pass; Or, The Midnight Call for Assistance

“LOOK! OUR AERIAL IS STILL UP”
THE RADIO BOYS SERIES
(Trademark Registered)
THE RADIO BOYS AT MOUNTAIN PASS
THE MIDNIGHT CALL FOR ASSISTANCE
BY ALLEN CHAPMAN
AUTHOR OF
THE RADIO BOYS’ FIRST WIRELESS
THE RADIO BOYS AT OCEAN POINT
RALPH OF THE ROUNDHOUSE
RALPH THE TRAIN DESPATCHER, ETC.
WITH FORWARD BY