[an error occurred while processing this directive]
Try the Vedanta Center of Ramakrishna mission. If one is not in your area
try calling the Chicago center. In Los Angeles where I stay, the Vedanta
Center has Rg , Yajur, and some Sama Veda texts (original Sanskrit text
with transliteration, commentary for some of them). I have a copy of the
Yajur veda text which is quite good (I am not sure about the completeness
though. A Vedic scholar may have to be consulted for verifying that).
There is also a new text called 'Mantra Pushpam' which contains only
Sanskrit text of all commonly used Vedic mantras and hymns, like
Mantra Pushpam, Rudram , Chamakam, various stotras on Gods, Goddesses,
and of course in the end, some slokas on Ramakrishna and Sarada Devi.
But it is an excellent reference to have.
Hope that helps a little.