A month or so ago, the capability to display a single class was added to the Alumni Directory, but it was somewhat hindered by annoying messages when using the back button afterwards. The solution to that issue has also now enabled the ability to save a single class display as a bookmark or favorite, including a logical name.
Just select your class from the pull-down list in the Alumni Directory, click submit, then save the page as a favorite or bookmark. Your class directory will automatically be generated every time you select that bookmark or favorite.