Yesterday was our day for the stories that sometimes accompany checks for Children's Hospital. Today we're all business again. We'll begin with the latest reports from groups that raised money for the hospital by singing Christmas carols.

First off, we have $15 from a dozen children who sang in the Redford Estates area of Oxon Hill. Also $23.74 collected when the St. Agnes Guild went caroling in Alexandria. And $28 from Girl Scout Troop 1808 (Riverdale School, Mount Vernon), which sang in Riverside Estates. Word from Bethesda was that "the Irvington Avenue Gan has struck again," and I have a $32 check to prove it.

Notice should also be taken of some postscripts to previously reported gifts. As people return to their offices after holiday absences, we can add $12.50 to the contribution noted earlier for the Retired Persons Pharmacy; also $20 for Autotax, Inc.; $20 for the Civil Service Commission's Bureau of Personnel Management; $25 for the National Coal Association; and $26 for the Legislation and Regulations Division of the Office of the Chief Counsel at IRS. Better late than never, gang. Much better.

Totally new listings for the day begin with $10 from students in the Second Grade at Randolph Elementary School in Arlington. The South Capitol Street Branch of the National Bank of Washington chipped in $14.45, and the staff of the Stanley H. Kaplan Educational Center contributed $20.

his year's first return from a certain super-spy outfit that is known in this column as the "Child Improvement Agency" is at hand. Personnel on the CIA's Psychological Services Staff raised $32 through the use of a technique so secret it can be identified only by the use of an asterisk - and my patriotic devotion to national security obliges me to delete even that.

Earlier this week we were impressed to learn that Cub Scouts aged 8 and 9 had worked at odd jobs to raise money for Children's Hospital. Today we learn that members of a kindergarten class at Rosecroft Park Elementary School (Oxon Hill) not only did chores to earn money but emptied their piggy banks as well to bring their contributions to $32.72. Kindergarters might not appreciate a tip of the hat, so how about a special hug for each of them?

A man who is retiring from the Army Library after 36 years of service asked that his going-away gift take the form of a contribution to Children's Hospital, so the Army Library Staff Association has sent me $36.05. In the Office of Commodity Management of the Agency for International Development, employees decided that it would be better to help the children than to "stuff our bellies with food and our livers with booze" at a Christmas party. Their decision netted $67.

For the sixth straight year, the National Weather Service's Office of Technical Services exchanged no in-house holiday cards, this time with a benefit of $95 to the children. Another $95 arrived from five separate old-Navy types aboard the U.S.S. Miscellaneous.

You say you'd like to see some three-digit models? Glad to oblige. In fact, today we can even show you a rare four-digit job.

Employees of the Columbia Management Division of the Howard Research and Development Corp. refrained from echanging $100 worth of intramural holiday cards among themselves. The Arlington office of Kappa Systems, Inc., used the same idea to create a $105 asterisk.

In some offices, passing the hat proved to be the most effective technique. At the State Department's Bureau of Ocean and International Environmental and Scientific Affairs, the kitty came to $125.85. For the staff at Laurel (Md.) Elementary School, it produced $131.10. The total at Churchill Road Elementary School in McLean was a little higher than that, $150.28, but the staff tells me it must be credited to "the school community" because parents and children helped with the project. Pressure Science, Inc., of Beltsville, is in only its second year of participation in our shoebox campaigns but its contribution this year has already hit $154.

The Communications Center at the Child Improvement Agency sent in a check of $177 and a note (written in disappearing ink of course) that said: "Shhhh! Don't let the enemy find out, but we wish you luck with your campaign." I have sent back a note that says, "Thanks, Cloak & Dagger Corps, but with a new administration coming in and taking a hard look at everybody's budget, you guys could use some luck yourselves." If they have any trouble understanding what I've said, they can take my message to their cryptographers for help.

No cards were echanged among personnel of the National Environmental Satellite Service (it's part of the National Oceanic and Atmospheric Administration), and as a result, $178 materialized right out of the blue. No card exchange among employees Club at Teledyne Geotech used the same idea to raise $185. Teledyne Geotech? No, it's not likely that you ever bought anything from them. Their computers keep an electronic eye on earthquakes, and they built the seismograph that NASA parked on the moon.

If there's one shop in town that doesn't need to be presuaded to cut down on the mailing of in-house greeting cards, it's Western Union telegraph Co. Staffers in WU's Government Systems Division refrained from sending each other an impressive $426 worth of cards.

But the biggest shot-in-the-arm our abacus has received in this year's compaign must be credited to the wonderful people at the Kiplinger Washington Editors. The men and women who put together the Kiplinger newsletters and Changing Times Magazine have been generous supporters of Children's Hospital for many years, and this time around their gift is the largest they have ever put together: $3,589.90.

As I count it, the 30 groups mentioned here today have moved us forward by $6,110.59. The year-end flow of "Dec. 31" checks from individuals was a little bit larger than usual, with 103 of them spurting out of the pipeline to add $3,413.30 to our count and bring the day's receipts to a very healthy $9,523.89. Together with the $73,146.56 already in the shoebox, this moved our running tally to $87,670.45. That's very gratifying, but what do we do now? Except for the Navy and Mother Bell, the big gifts are all in, I think. They are, aren't they?