Why Won't PDF Print?

Images, especially older ones including maps, may be large in size depending on how they were scanned. 

If you're having trouble printing a PDF, try downloading it and printing as an Image which optimizes the file.

NOTE: Make sure you have a way to open PDFs. Adobe Acrobat Reader is free to download.

1
Right click on the selected PDF on your desktop, then select Open with Acrobat Reader DC.
2
When the PDF opens, click on File (top left), then select Print (at bottom).
3
Make sure Fit is selected.
4
Click on  Advanced (top right) and make sure  Print As Image (at bottom) is selected.

File may take a few minutes, but it is optimized to print.