José Ángel Gutiérrez (1944) American academic
page 10523 of HOUSE OF REPRESE.NTATIVES-Monday, April 28, 1969. This is on page 27/99 of the part 8-5 PDF https://www.gpo.gov/fdsys/pkg/GPO-CRECB-1969-pt8/pdf/GPO-CRECB-1969-pt8-5.pdf ( archive http://archive.is/753l4). According to Behnken this was said "a few weeks later" to clarify the preceding MAYO rally quote. Gonzalez describes it as "Last Tuesday, at Kingsville" indicating it was said 22 April 1969.