I don’t know why this was “new” for me, but it did take a google search to figure it out. Here’s a great link that explains how to make only 1 page within Microsoft Word 2010 in a landscape layout, while keeping the rest in the portrait layout.
Copied below for reference:
Go to the last page you want to keep vertical (Portrait) then select Page Layout | Breaks | Next Page.
Now click anywhere in the page where you want to have the horizontal page (Landscape) and go toPage Layout | Orientation and select Landscape
Do the same steps for the following page, the one after the landscaped one, but this time choosePortrait. Only do this if you want to restore the Portrait orientation back to normal.