Finding a special message hidden within a drawer of note cards

My greeting card drawer contains note cards without matching envelopes, boxes of envelopes minus their cards, and postage stamps with no cash amount so I don’t know if they are 25-cent stamps from long ago or recent more expensive ones. Scattered among them are birthday cards that I bought in advance, forgot I had, and replaced with new ones.

One that reads “Happy birthday to my grandson who is turning 10″ won’t do it now that he’s in college.

At the back of the drawer is my mother’s...