His mask: keeps him on the job
| Uploaded by | National Library of Medicine |
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| License | No known copyright restrictions |
| Comments | 0 |
| Favorites | 13 |
| Views | 6,641 |
| Date uploaded | 2020-07-31 |
| Tags | mask, photomechanicalprint, mouth, nose, respiratory, lungdisease, healthbehavior, preventioncontrol, publichealthservice, stillimage, nationallibraryofmedicine, imagesfromthehistoryofmedicine, ihm, historyofmedicinedivision, publicdomain, archivesofmedicine, nlmdigitalcollection |
| Visibility | public |