You can find their educational videos on YouTube.
I have yet been asked to do any research considered to be "Hispanic" but I understand records in Spanish go way back into Spanish America and that some people are traveling to Mexico City to do research. I don't speak Spanish, but then I don't speak German or Latin or any other language, but I find that it's not so difficult to translate, especially not with all the Internet translators available.
As for his particular Apache tribe, there's more than one possibility.
MESCALERO APACHE TRIBE South Central New Mexico
KRQE : FOX : THREE APACHE TRIBES OF NEW MEXICO This article focuses on where they lived, what they are famous for and where they live now - it's brief. EXCERPT: "There are three Native American Apache tribes in New Mexico: the JICARILLA APACHE, located in northern N.M near the Colorado Border; the MESCALERO APACHE, located near Ruidoso, and the FORT SILL APACHE near Deming.
If I remember correctly, the NAVAJO are also an Apache nation.