On Dec. 1, I supplied a mailing address for people who send me checks for Children's Hospital. On the 6th, I noted an oversight. I had forgotten to suggest that my name be made part of the address.

When a letter to a large corporation does not include the name of a specific person there, a mail handler must open the letter to find out for whom it is intended. So I apologized for failing to suggest that my name be included in the address. The caption on that item was "Mea Culpa."

On the 9th, I received an envelope that had already been opened by somebody else. The envelope was addressed to, "Mea Culpa, c/o The Washington Post."

Incidentally, eight letters were addressed to "Children's Hospital, c/o The Washington Post" or "Children's Hospital, 1150 15th St. NW."

Some letters addressed in this manner are probably delivered to the hospital instead of to me, and this may explain why some group gifts are not mentioned here each year.To ensure proper credit for your group, please address your letter to: Bill Gold, c/o The washington Post, 1150 15th St. NW, Washington, D.C. 20071. Make checks payable to Children's Hospital.

We begin this year's gift report with $5 from Code N350, Data Management Division of the Defense Communications Agency Operations Center. Children who attend the Vacation Church School operated by the Grace United Methodist Church in Takoma Park chipped in $7.80 in small change.

The Child Improvement Agency (isn't that what CIA stands for?) weighed in with $16.19, courtesy of Management Class 3-78, Office of Communications. I'd love to know how they arrived at that sum, but one doesn't ask the CIA too many questions.

Members of the Grand Slam Bridge Club of Silver Spring passed up an intramural gift exchange to divert $20 to me for the children. The Ladies Auxiliary of Scott Johnson Collins Post 9619 of the VFW voted to send me $25 gift was also voted by the Maryland Metropolitan Alumnae Association of Alpha Delta Pi. And a "money tree" brought in $25 from the National Society of Professional Resident Managers. Gee, if President Carter would plant some money trees on the Ellipse, perhaps he could really cut taxes.

A flower collection in the Management Services Division of Agriculture's ASCS brought in $25.55 more than was needed for the flowers, so guess who got the leftovers. The folks at Leon Office Machines sent me $50. After Club Americana's huge gift was reported last year, another $50 trickled in from its members, so that sum must now be accounted for in the current tally.The Lake Anne Elementary School Drama Group (Reston) raised $50 for the hospital. Scott Johnson Collins Post 9619, VFW, added $50 to the contribution reported above from the post's Ladies Auxiliary.

When the burdens of public office become too great, employees of the Office of Planning and Zoning of Anne Arundel County relieve the tension with an occasional "fiddlesticks" or some such, but they don't feel too guilty about it. They know they will be fined for cussing and that all fines will go to Children's Hospital. This year their cussbox held $55, and the planners and zoners want it known that even the noncussers chipped in.

At times, the employee Coffee Fund at Holiday Inn-Central runneth over, so $68 was drained from it to provide medical help for a needy child. Employees of Strayer College who made a substantial gift to last year's campaign turned in an additional $75 after I stopped counting in February, so the $75 goes on this year's tally.

The Jacob Heckman Foundation sent me $100 for the children and a promise of continuing support. The Brightwood Investment Club, which has been represented in these reports for many years, chipped in $135.

Largest group gift of the day was $225 contributed by residents of the Oakwood Apartments in Falls Church. Any place those people live is a nice neighborhood.

As I tally it, gifts from these 18 groups came to $1,007.54. Thirty-two individuals added $1,818, and this is one day I'm truly sorry that we never identify individual givers. One of those individual gifts was from a resident of the U.S. Soldiers' and Airmen's Home. It was in the amount of $1,000.

With $1,007.54 from groups, $1,818 from individuals, and $254 in hitherto unreported 1978 gifts, we begin our drive with $3,079.54 in the shoebox.Now if we get only $202,437.10 more, we'll match last year's total.