I have requested this before but it has been years- so here is a second request , we need this series it is such a great tool, and since we already have their "Exegetical Summary" series you have a relationship established with them.
I have this series in print but it would be so much better in L4, it is currently 11 volumes.
Here is the link for those who might want to support this and get it going.
http://www.ethnologue.com/show_catalog.asp?by=ser&name=SSA
They also have example pages for viewing.