I strongly recommend to visit this site, as it includes the Ashtakas and Siddhanta by Om VishnuPad Vallabhacharya, which I haven't seen in English earlier.
The cite is bilingual (Hindi-English) and I was strikingly amazed to find such precious treasures as "Pushti Pravah Maryada", "Navaratnam" and other Siddhantas of Shree Pushti-Marg on this site.
