| Mail HQ |
| Letter HQ |
| Mail ctr. |
| Mail abbr. |
| Ltr. center |
| Letter ctr. |
| Mailing sta. |
| Mailing H.Q. |
| Mailing ctr. |
| Address abbr. |
| D.C. building |
| Mailing abbr. |
| Fed. publisher |
| Sen. publisher |
| H. Q. for mail |
| Main mail ctr. |
| Local mail H.Q. |
| Mail-sorting HQ |
| Postmaster's HQ |
| Vendor of stps. |
| Fed. publishers |
| Fed's publisher |
| Mail hub: Abbr. |
| Bldg. with boxes |
| Govt. publishers |
| U.S. mail center |
| Fed. mailing ctr. |
| Mail sorting ctr. |
| Mail place: Abbr. |
| Where to buy stps. |
| Mail center: Abbr. |
| Central mail bureau |
| General Post Office |
| Gov't public agency |
| U.S. Govt. building |
| Fed. document issuer |
| Fed. documents group |
| It issues fed. docs. |
| U.S. document issuer |
| The buck starts here |
| Fed. publishing house |
| Federal doc. producer |
| Federal printing org. |
| Ltr.-mailing location |
| Govt. documents group |
| Large U.S. publisher? |
| Fed. pamphlet producer |
| U.S. publications grp. |
| Fed's document producer |
| Where ltrs. come and go |
| Fed. documents producer |
| U.S. document publisher |
| Delivery notation: Abbr. |
| Postmaster's post: Abbr. |
| City's chief mail centre |
| Where IRS forms are made |
| Concern of Sec. J. Farley |
| Federal documents producer |
| Main mailbox locale: Abbr. |
| Place to find ltrs. in boxes |
| Disseminator of fed. documents |
| U.S. federal documents producer |
| U.S. government document producer |
| World's largest publisher (Abbr.) |
| Congressional Record" printer: Abbr. |
| Org. that produces the Congressional Record |