Solution for "Time Acrostic"

THE PLACES WE HAVE KNOWN DO NOT BELONG SOLELY TO THE WORLD OF SPACE IN WHICH WE SITUATE THEM FOR OUR GREATER CONVENIENCE THEY WERE ONLY A THIN SLICE AMONG CONTIGUOUS IMPRESSIONS WHICH FORMED OUR LIFE AT THAT TIME THE MEMORY OF A CERTAIN IMAGE IS BUT REGRET FOR A CERTAIN MOMENT AND HOUSES ROADS AVENUES ARE AS FLEETING ALAS AS THE YEARS

The author and source is:

MARCELPROUSTINSEARCHOFLOSTTIME

Each of the lines are:

A.  METRONOME
B.  ABOVEBOARD
C.  REFUTED
D.  CATASTROPHE
E.  ETHICS
F.  LYCANTHROPE
G.  PERIHELION
H.  RANDOMWALK
I.  OSAGECOUNTY
J.  UNGOLIANT
K.  SLYTHERIN
L.  TOULOUSE
M.  INTERREGNUM
N.  NEVERWHERE
O.  STATISTIC
P.  EGGOWAFFLE
Q.  ACCUSE
R.  REANIMATES
S.  CHRONOMETERS
T.  HAWAIIAN
U.  ORCAWHALE
V.  FEEDMESEYMOUR
W.  LIGHTMYFIRE
X.  OFFSITE
Y.  SNOWSHOES
Z.  THIEVES
aa. TOOTH
bb. ISAACNEWTON
cc. METALHEAD
dd. ENSIGN