PHOTO PAPER THICKNESS NORMAL PHOTOGRAPH THICKNESS. REF NO DC8291.
PHOTO COLTHROP SIGNAL BOX OUTSIDE 1973
PHOTO COLTHROP CROSSING SIGNAL BOX 590
PHOTO COLTHROP CROSSING SIGNAL BOX - WITH ELECTRIC CABLE POST IN PLACE
PHOTO INSIDE COLTHROP SIGNAL BOX 1980
PHOTO VIEW FROM COLTHROP SIGNAL BOX 1984
PHOTO COLTHROP CROSSING SIGNAL BOX 100 ANNIVERSARY JULY 1998 (2)
