June 30 Events
1971 – Ohio ratifies the 26th amendment making the voting age 18 *
1972 – The calendar error demands a leap second @
1936 – The 40 hour work week becomes law #
1948 – The transistor is demonstrated in Murray Hill, NJ
1971 – Ohio ratifies the 26th amendment making the voting age 18 *
1972 – The calendar error demands a leap second @
1936 – The 40 hour work week becomes law #
1948 – The transistor is demonstrated in Murray Hill, NJ