The historical newspapers database gives you access to:
This tutorial will demonstrate advanced searches by date and article type (i.e. editorial, advertisement, obituary, etc.)
After logging in, it is recommended you select the ProQuest link to search newspapers as shown below. The graphical version does offer some nice features but it does not include citation information.
In this version you will find that each article has a citation link. You must drop down and select MLA 8th Ed. and then also
Think of this citation as a starting point, as it often needs to be revised to meet MLA 8th Ed. requirements.