It's not often that one comes across a piece of ephemera relating to a same-sex relationship and I can only assume that this amazing little piece of card is one such. I'm sorry that the photo is poor, it was taken on a mobile phone. It's of a copy of Love by Walter de la Mare.
The card reads "To David, on his birthday April 12th, 1980, John. See Love Walter de la Mare Page 153 - Verse 184."
It is a charming note linked to a charming poem and, wherever you are now, should you still be with us or nay, may I be among those, 35 years later wishing you a Happy Birthday for today David.