It has always kind of bothered me that a lot of stamp albums make you collect souvenir sheets from stamp expos in the 30s and 40s as a whole sheet (rather than just the imperf), but for more modern souvenir sheets, they expect you to collect just the stamps.
Mystic's page 779 has the stamps from the Pacific 97 Souvenir Sheet as individual stamps. I previously hacked the page to keep the two triangle stamps together as a se-tenant. But the more I thought about it, the more I wanted the whole sheet, with the selvage showing Pacific 97 and the date it was held.
So, I went a little nuts this afternoon. I made a page 779a and 780a, which had the whole Pacific 97 sheet. Page 779b and 780b contains the other 3 stamps that were page 779 originally.
Once I finished this, I realized I need to modify pages 777-778 so that the right description was facing 779. So this hack revisits the hack for pages 777 and 779, providing a total of 3 pages.
If you're just going to keep the se-tenant pair of 3130-3131, then use my previous hacks for pages 777 and 779 to keep all se-tenants together.
If you agree with me and want the whole Pacific 97 sheet intact, then use this hack.
Right now, I only have a PDF, because the links to the stamp images are a mess. Soon as I get those cleaned up, I'll post the Scribus files.
Here's what I did to split page 779:


Downloads on my blog:
http://stamphacks.com/wp/?p=1228