At the risk of being too British centric (you, gentle readers can help us avoid that!) I just came across a fascinating collection of mostly radio documents relating to the suffragists on the site of the BBC archive.
Worth a listen. I particularly like the 1946 talk by Ada Flatman. The enthusiastic and melodic delivery alone is worthwhile.
alecbadenoch
carolynbirdsall
carolinemitchell2012
cvaldigem
gloriakhamkar
Heidi Svømmekjær
kterkan
nazanhaydari
Women's Radio in Europe Network (WREN) 