I have taken a 3 ring binder and have the mechanic give me a sticky
with the work description on it. I then glue this to one thin piece of
paper and it goes in a glassene envelope in the 3 ring binder. I don't
keep seperate engine logs or aircraft logs, but if I think it is
relevant to both I have the mechanic give me two copies. Things are
NEAT, copiable, sequencial and if there is a mistake, correcting it is
not messy. With logs, neatness counts. I don't keep receipts and I
don't log what doesn't need to be logged.

If I were buying an airplane, I'd take the old logs, put them in the
vault, and start new ones with the above method.

Also remember, logs are valuable. I don't let a mechanic keep them
overnight in his file cabinet. Too much at risk, no receipt, if he lost
them he could just say he never had them.