Here is sort of a strange old one that I believe I did in 2010 of Yellow Pear Tomatoes:
Anyway, wikipedia tells me that the pear tomato originated in Europe in the 1700's and that the first recorded yellow pear tomatoes were grown in Europe in 1805. I think you can probably tell from the illustration why they are called "pear". It's not because of their taste, which is mild and tomato-y! The SESE catalog says they are great for popping in your mouth.