1930`s message - for today?

by Martyn Crosby

Labyrinthine@aol.com CLICK HERE FIRST

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A.   Hank kept wall up, preparing to dive - at the point
of a sword! (4,3,5)

B.   Previous prefix in goodbyes terrify (6)

C.   Beetles dig up Arabic Sea (9)

D.   English river pegs out on golf course (4)

E.   Upsetting Noah, a perversity provides means of combatting
antisocial behaviour (8,7)

F.   Ewes knew about hebdomadal journalism (8)

G.   Sealyhams tersely hide rodents (8)

H.   Off-color etude, when rather modified (5,3,7)

I.   Faux pas, insulting gay about iron! (5)

J.   Reptilian coil, go around after the lady`s favorite
(12)

K.   Natural log base after upset Arabic demon appears (6)

L.   Let precipitancy run in turbulent concept of quantum
mechanics (11,9)

M.   Two colored, Royal Society quits drastic surroundings
of an eliminated harmonic shakeup (11)

N.   Molds, redesigned, obsess me (8)

O.   Philanthropy a soul upset with study of the physical
universe (7,10)