ALGOL 68 did have structs and unions, however, which might be what they meant by "ALGOL in the 60s." That doesn't contradict what you say, though, since 1968 is

ALGOL 68 did have structs and unions, however, which might be what they meant by "ALGOL in the 60s." That doesn't contradict what you say, though, since 1968 is already in the late 1960s.