https://www.oregon.gov/newsroom/Pages/NewsDetail.aspx?newsid=36869 – Press Release

https://sharedsystems.dhsoha.state.or.us/DHSForms/Served/le2288K.pdf -  OHA Statewide guidance on face coverings 6-30-2020

https://osha.oregon.gov/Documents/COVID19-Face-Covering-Advisory-Memo.pdf - Oregon OSHA guidance on district’s enforcement of face coverings

https://www.cdc.gov/coronavirus/2019-ncov/prevent-getting-sick/diy-cloth-face-coverings.html - CDC General Guidance on face coverings

https://www.cdc.gov/coronavirus/2019-ncov/prevent-getting-sick/how-to-wash-cloth-face-coverings.html - CDC washing face coverings

https://www.pnmedical.com/facemasks/ - PN Medical Combating the effects of wearing face coverings

https://sharedsystems.dhsoha.state.or.us/DHSForms/Served/le2390e.pdf - OHA FAQs on face coverings  

https://sharedsystems.dhsoha.state.or.us/DHSForms/Served/le2728.pdf - OHA Signage for face coverings

https://sharedsystems.dhsoha.state.or.us/DHSForms/Served/le2390L.pdf OHA Face covering facts