I do not know, but I am certainly interested. Maybe you can call leapfrog. I went on the website & asked google. I was not able to get an answer. Please do share if you find out. That would be great! Thanks in advance & I wish I could have been more helpful. Good luck.
I'm not certain...I've never seen the lower case one before...
Im not sure. I only own the letter factory bucket.
answered on June 2, 2013