Links:

History of Tango:

Christine Denniston Leading Tango Historian

Wikipedia

Tango Festivals:

Tucson Tango Festival

Albuquerque Tango Festival

Cool Tango Websites:

Tango Biographies and Music

ReporTango Magazine

Tango Orchestras and Musicians:

Comprehensive List of Tango Orchestra Leaders

QTango

Tanghetto

Tango Rapper Momo Smitt