In a 1953 effort to end the authority of local Native American governments, Congress passed Public Law 83-280. Allowing states to apply their criminal and civil laws to Native American country, the law provided an unparalleled opportunity for the state of South Dakota to crush burgeoning Lakota nationalism. Edward Valandra's Not Without Our Consent documents the tenacious and formidable Lakota resistance to attempts at applying this law. In unprecedented depth, it follows their struggle through the 1950s when, against all odds, their resistance succeeded in the amendment of PL 83-280 to include Native consent as a prerequisite to state jurisdiction. The various House and Senate bills discussed in the manuscript are reproduced in five appendices.