The ever knowledgeable James Hooker gave me a copy of the following a few years ago. I have it in a printable-ish larger resolution too, but am not sure who holds the original copyright as regards making further copies.
I don`t think this is all the bulb shapes out there especially as it`s a few years old, but most of the common types you`ll come accross are there...
(http://bulbmuseum.net/glassbulbshapes.gif)
(this is a photographic copy of the original paper print which is not in great condition, I don`t have an original electronic version)