The larger majority of their members work in grocery stores.

In 1963, Local 1357 of the retail clerks had 4,000 members in Philadelphia area supermarkets.

By the end of the decade, through the organizing power of president Wendell Young III over 10,000 non-food retail workers and department store employees joined Local 1357.

In 1971, Pennsylvania State Liquor Store clerks joined the ranks of the expanding union.

In 1979 the Retail Clerks International Association had merged with the Amalgamated Meat Cutters to create the United Food and Commercial Workers (UFCW) International Union.