The book of stars; being a simple explanation of the stars and their uses to boy life, written to conform to the tests of the Boy scouts (1915)
Collins, A. Frederick (Archie Frederick), 1869- · New York, D. Appleton and company · leaf 58
Fig. 38.—Boy Sending Flash Signal with Mirror. and will prove very useful if you are able to send and receivemessages in the dot and dash alphabet, or Morse telegraph code,which is given in Fig. 39. A short flash represents a dot, a … +#\^:p::±^: rrrttrr^T
Astronomy · Stars
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.
