I guess I need to ask "what aerial bombs?" what air service are we discussing? the British, French, German, American, Russian?
there is a reprint of many of those leaflets called "Details of Aerial Bombs" ISBN: 9781845742782
but I suspect that the word "original" in the initial post means that you may already own this book and it was not to your satisfaction.
at any rate, I bought this book earlier this year through Amazon-- although it's also available here:
Details Of Aerial Bombs - Naval & Military Press
there are some 20-30 leaflet reproductions in this volume. frankly, unless you're a die-hard historian or a professional author-- this book should do nicely for the normal WWI afficianado with a limited budget. it covers all of the major aerial bombs in usage by the RAF during 1918. if you're looking for information on other nationalities I'm afraid that I have nothing else to offer.