Hypertext Transfer Protocol Secure.
Basically, it's a secured encrypted communication between the client and the web server, to be able to transfer data safely.
The web address of the Arts In Stark is: https://www.artsinstark.com
https://cdb1.csd.disa.mil/
https://vle.heatonmanor.newcastle.sch.uk/
The web address of the Glensheen-Historic Estate is: https://glensheen.wp.d.umn.edu
The web address of the Graceland University is: https://www.my.graceland.edu/ics/Resources
The web address of the Rourke Art Museum is: https://www.facebook.com/RourkeArts
The web address of the Pennsauken Historical Society is: https://www.facebook.com/PennsaukenH
The web address of the Cradle Of Aviation Museum is: https://www.cradleofaviation.org
The web address of the Way It Was Museum is: https://www.facebook.com/pages/The-Way-It-Was-Museum/215786111772127
The web address of the Center For Historical Archaeology Inc is: https://historicalarchaeology.org/
The web address of the Lawrence Park Historical Society is: https://www.facebook.com/lawrencepar
Where it shows the web address, have it say https (as in https://youtube.com for example). NOTE: This will not always work. In fact, it only works on about 20% of the websites you try it on.