Q: I am a 78-year-old recent widow. I got my own Social Security number when I was about 20. But since my husband and I started getting Social Security benefits about 15 years ago, the correspondence I got from the Social Security Administration showed my husband’s Social Security number with a letter “B” behind it. Somebody at a Social Security office once told me this meant I was getting wife’s benefits on his record. How does the letter “B” stand for a wife? And now that my husband has died, I notice that any mail I get from the SSA shows my husband’s number with a letter “D.” Does this mean “deceased?”…