Partial answer: just decoding the Morse code, the first passage is:
DIRECT SPECIAL ATTENTION CHARLES YOKOHAMA URGENTLY GOING ODDLY SLOW ISTANBUL TEN NASTY GAPS IN SATURDAY MEANS TIBETAN MEDICINE EASILY CHANGES WEST EKOMBE
And the second passage is:
WATER TCHAIKOVSKY HOUR UTERUS FOUND RPG OLD ICICLES EONS NATHAN KIA TALLOW COURT ASPARTAME T
Searching for the first passage on Google found a copy of
The Blue Lotus (Le Lotus bleu)
which contains this passage: