Here's the transcription in case the image does not appear:
Dear Chris —
I have enjoyed watching you learn and grow over the last couple of years. You have become and excellent analyst — UWMF is lucky to have you. I will miss your superb work, smiling face and Luca stories! Best of luck to you on this exciting step in your career! I wish you, Kyra and Luca much happiness!
Sincerely,
[name]
And here's the second:
with the text:
Chris
I really appreciate the time and dedication and professionalism that you offered to the [organization's] projects and my RA project in particular. You pressed on to make this all possible, and I am grateful. Regrets for the frustrations along the way, but know that your contribution will be remembered.
All the best with your next personal + professional pursuits! Congrats on the well deserved Scientist position!
Thank you,
[name]
I kept both notes because they are very meaningful to me, and I think this highlights how important it is to write hand-written notes of thanks to you colleagues: It can be touching, powerful, and memorable for the recipient, and the writer has earned a relatively permanent place in memory. It's a perfect way to not only show genuine gratitude, but also earn a positive place in the recipient's mind, whether for the purpose of networking, friendship, or simple kindness.