I was searching for readers compatable with the 'Lingua Latina per se Illustrata' series (apart from the ones listed on http://focusbookstore.com/lingualatina.aspx) and I stumbled accross:
Tibulli Elegiae, Bucolica Carmina and De Rerum Natura
(the latter two mentioned on http://www.culturaclasica.com/lingualatina/libros.htm, bottom of the list. Those two appear not to be available at amazon.com, only at some Italian and east-European webstores.)
Judging from the available sample pages, all three books are completely in LLPSI style. Each of them is intended to be readable at roughly cap.45 of Roma Aeterna.
I find it somewhat strange that they are not even mentioned on the LLPSI site.
As I only found these three by mere accident, I was wandering if there somewhere exists a list of ALL compatible books? Is there some community aiming to write more books in this style, or is it just coincidence that these 3 all appeared within a span of a few years?