USRDA
| Date | Clue |
|---|---|
| 2020-09-20 | Old food label std. |
| 2017-10-15 | Onetime govt.-prescribed nutritional figure |
| 2015-09-13 | Old F.D.A. guideline |
| 2015-04-08 | Old nutritional fig. |
| 2014-08-10 | Old food label std. |
| 2013-05-07 | Nutritional fig. |
| 2012-12-04 | Nutritional datum, in brief |
| 2012-10-18 | Old F.D.A. guideline |
| 2010-05-09 | F.D.A. guideline |
| 2010-04-22 | Std. on food labels |
| 2008-08-06 | 15 mg. of zinc, e.g. |
| 2003-12-16 | Abbr. on a food label |