All three major modern web browsers have the same problem: although they will read PDF files (the tree pages are all PDF format), they do not support the more complicated things in the PDF format, and in particular PDF pages that include links. These pages have a large number of such links, so that when you're looking at a tree page you can bring up photos, notes, and move from one page to another. If you can't get those links, you'll miss a great deal of the information here. [And, no, there's no way I can translate the pages to some more-universal format...if there even is one...]

The following browsers will not work: Chrome (Google), Firefox (Mozilla) and Edge (Microsoft, Windows 10). However, Internet Explorer does work, and it is still there in Windows 7 and 8, and--though not easily found--in Windows 10 (see below).

Click on the example tree page on the right. When the page comes up (in your browser's PDF reader), click on the blue link at the upper right (Sheets B-F). That should take you to sheet B, but it won't if you're using a modern, dud browser.

1) Internet Explorer is the easiest way around this problem: just use it as your browser for this web site. If it is not already on your desktop or taskbar (Windows 7 or 8), find it in the list of programs in Windows 10, under Windows Accessories. Or tell Cortana to find it. Right click to make a shortcut for it and drag it to your desktop. You might even (as I do) specify jesty.org as the default site in IE, and just use your regular browser for your other browsing needs.

2) Firefox will work if you don't want to use IE, but you need to tell it to use Adobe's Acrobat Reader to read PDF pages. Firefox is free from Mozilla (http://www.mozilla.org). You also need Adobe's PDF (Acrobat) reader. You probably have it already for reading downloaded PDF pages, but if not get it free at https://get.adobe.com/reader. Then run Firefox and do the following:
Click on Menu (triple bar on right)
Click Options
At left, click Applications
Click Content Type = Portable Document Format (PDF)
Click menu pulldown arrow on right
From list, click on "Use Adobe Acrobat (in Firefox)"
Close Options page.

3) It is futile to try and fix Chrome to use Acrobat (Google's war against Adobe's universal PDF format). Otherwise, there is Edge in Windows 10, which in standard form (as of now, July 2016) hijacks any attempt you might try to make it use Acrobat, and quickly returns control to the browser. The following hack is not for neophytes, and courtesy of Ramesh Srinivasan, from a Help site. Note also that playing with the registry is not the faint-hearted and a little error can be fatal to the PC.
Run Regedit.exe (Windows key + R brings up the run-program box: enter the program name and hit Enter).
On the left pane, find your way to
HKEY_CURRENT_USER \ SOFTWARE \ Microsoft \ Windows \ Roaming \ OpenWith \ FileExts \ .pdf
Right-click on UserChoice and hit Delete.
Exit Regedit
Download a PDF file from wherever you like, or perhaps you have one already on your desktop.
Right click on the file icon.
Choose Open With.
Choose Adobe Reader.
It might work!

Jolyon Jesty
August 2016