Harlan Wittkopf has had 35 years to find cone shells on the beaches of Sanibel Island and he has quite a nice collection of Alphabet cones.
In fact, his collection is so extensive (alphabet cones are fairly rare) that he can spell out the alphabet with markings on his cone shells. He also has shells containing the numbers 1-12. Some are very clear to see and others need a bit more imagination, but I find this collection to be very interesting.
He has put together a brochure for the Bailey-Matthews Shell Museum on Sanibel Island with photos of his shells. This brochure was made with kids in mind as an educational tool and the brochure is handed out to kids who visit the museum and even kids in the classrooms who order the Shell Museum School Collection Kit.