Ask at the public library, they might know of a book re-binder.Oldies but goodies! Is the bottom one pictured of a shipwreck? It would be fun to browse through that series.
The oldest book around here is probably my grandfather's well-thumbed Boy Scout manual from the 30's. Like your collection, the manual is in pretty rough shape, front cover is actually detached, but I am afraid to tape it up with cheap tape that in time may do more damage than good. Professional book re-binders seem to be hard to find as I suppose it is somewhat of a lost art.