Vintage Metal First Aid Kit Box Missouri Works Division E.R.A-Great Depression?

Description

For sale is a Vintage Metal First Aid Kit Box from the Missouri Works Division - E.R.A.   I have tried to look up the history of this group, but haven't had much luck.  Possibly from government-sponsored work program from the Great Depression.
Anyway, the box is solid.  It is old and has some rust on it and is dirty, but is solid.  Pretty neat old first aid kit box.
If you have any questions, please let me know.  Thanks