Some links:
Who are the Miao?These are primarily oriented to Southeast Asian Hmong:Miao via ethnologue.com (80 hits... classifying as 'Hmong' subdialects
Pollard Miao script from omniglot.com
Ethnic Minorities entry from china.org.cn
Songs and Stories and a Glossary of Phrases of the Hua Miao of South West China Collected and Translated by R. Keith Parsons and P. Kenneth Parsons
China Folklore Photographic Association on the Miao
Hmong Cultural Center and Hmong Studies Internet Resource Center...and books:
AUTHOR Hostetler, Laura.
TITLE Qing colonial enterprise : ethnography and cartography in early
modern China / Laura Hostetler.
IMPRINT Chicago : University of Chicago Press, c2001.
CALL NO. GN635.C5 H67 2001.
AUTHOR Schein, Louisa, 1957-
TITLE Minority rules : the Miao and the feminine in China's cultural
politics / Louisa Schein.
IMPRINT Durham [N.C.] : Duke University Press, 2000.
CALL NO. DS731.M5 S3 2000.
TITLE Cultural encounters on China's ethnic frontiers / edited by
Stevan Harrell.
IMPRINT Seattle : University of Washington Press, c1995.
CALL NO. GN635.C5 C85 1995.
AUTHOR Jenks, Robert Darrah.
TITLE Insurgency and social disorder in Guizhou : the "Miao" Rebellion,
1854-1873 / Robert D. Jenks.
IMPRINT Honolulu, Hawaii : University of Hawaii Press, 1994.
CALL NO. DS731.M5 J46 1994.