>>50 years ago — Word that Interior Secretary Oscar L. Chapman has executed a contract giving the Imperial Irrigation District operation and maintenance of the All-American Canal was received in El Centro. There had been some concern over Chapman's delay in signing the pact.
>>40 years ago — The presidents of the United States and Mexico have ordered the International Boundary and Water Commission to recommend within 15 days measures to alleviate a salt problem in the Colorado River. White House Press Secretary Pierre Salinger said the trouble "is up here," meaning on the U.S. side.
>>30 years ago — An estimated 400 members of Cesar Chavez's farm labor union left Calexico for San Diego, where they reportedly joined other state farm laborers in a boycott of hotels that will host the delegates of the Republican National Convention this summer.
>>20 years ago — Patrick Arthur Dixon, 40, the man who allegedly impersonated a psychiatrist for nearly a year in Imperial County, has been ordered to turn over samples of his handwriting to the District Attorney's Office today in connection with his prosecution on charges of unlawful medical practice.