DEAR ABBY: Just before my only child's passing away, he informed me that while he was in college (a medical student) he had been a frequent sperm donor. I cannot begin to tell you how priceless it would be for me to locate some of my genetic grandchildren!

There are many registries for adoptees and their natural parents, but to my knowledge, there are none for sperm donors and their donor offspring. I am hoping to develop such a registry in an effort to locate these precious children and help others in this situation. - AN OPEN CHAPTERDEAR OPEN CHAPTER: I urge you to discuss the legal ramifications of your idea with an attorney before progressing further with this project.

Donor confidentiality is one of the reasons artificial insemination has been so successful in this country. (Last year, between 50,000 and 80,000 women benefited from artificial insemination in the United States.) If sperm donors knew there was a chance that their identities would later be revealed, they would not donate - which would greatly reduce the number of candidates (and the genetic characteristics) from which prospective mothers and their physicians would be able to choose.

DEAR ABBY: I am an American Army officer stationed in Korea. I am 38 years old. While I have been stationed overseas, my mother continues to open my mail, even after I have politely asked her to stop.

She reads "Dear Abby" faithfully in the Chicago Tribune, so would you please print this with a little note from you admonishing her for this practice? - CAPTAIN IN KOREA


Dear Mother: I'm sure you love your son, but you should also respect his privacy. Motherhood does not give you the right to open your son's mail. So if you want his respect, you will stop this violation of his privacy, which surely must demean you in his eyes. - Abby

P.S. Captain, why not instruct your friends to send their letters to you in care of someone who can be trusted?

DEAR ABBY: This is in regard to "Repulsed in Florida," who found it offensive when fellow diners proceeded to blow their noses loudly at the table.

I, too, have been raised in a family whose members were taught to excuse themselves to the restroom when they felt the need to do any nose blowing. Let me share this true story with "Florida":

My family and I had gone to dinner at a buffet-style restaurant. The man sitting behind my grandmother began to loudly blow his nose. Grandmother turned to him and asked sternly, "Are you through?"

He then replied, "No, I think I'll go back for some more chicken." - GROSSED OUT IN FRESNO, CALIF.

By popular request, Abby shares more of her favorite prize-winning, easy-to-prepare recipes. To order, send a long, business-size, self-addressed envelope, plus check or money order for $3.95 ($4.50 in Canada) to: More Favorite Recipes by Dear Abby, P.O. Box 447, Mount Morris, IL 61054. (Postage is included.)