The Plan of Delano was a powerful persuasive document in the interrela
ted Chicano and farmworkers' movements of the 1960s and 1970s. To supp
ort the thesis that this Plan S persuasive qualities are illuminated b
est from the perspective of its own ethnic legacy, this essay attempts
to demonstrate that the Plan's Mexican-originated generic form and Me
xican-American cultural context reveal sources of its rhetorical power
and meaning. These findings provide several implications for the rhet
orical criticism of ethnic discourse.