Thanks for the info,
I reviewed Lesson 19.6 and 19.7 before I wrote for assistance. It really doesn't address this particular situation, where there are no chapter titles or headings, only asterisks.
I chose to begin the new volume using the "Part Number" centered, followed by the "Part Title" centered, followed by 3 asterisks (Cont.). I had used the 3 asterisks to identify new chapters throughout the book, so I figured this was the closest I could get to the information I found in the manuals.
Thank you again for your input.