Thank you for remembering

My mom called last week asking me to send Grandpa Joe a birthday card since he was set to turn 93 on the 22nd of February. She warned me not to send him a real card and that he would prefer a few sentences on plain notebook paper (Grandpa Joe lived through the Depression and doesn't like extravagance). Today, I got a response from him thanking me for remembering his birthday. This chain of correspondence represents the single longest succession of communication between us. That's a total of 4 letters in the last 2 months.

Here's what he said below. Notice how his dates are messed up on the bottom, and, if taken for face value, would actually make him a 100 years old:

Dear Rachel,

Thank you for taking the time to send me a birthday card. Especially since you are a college student. I will look forward to hearing about your elective course - its title does not ring any bells to my experience.

Best wishes,
Grandpa Joe
93 today
Feb 22 1905