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| 1967, Sept. 10 |
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| A plebiscite on Gibraltar registered 12,762 votes. Of these, 12,138 favored remaining a British possession, while 44 voted for union with Spain. | 1 |
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| 1968, May 5 |
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| The Spanish government closed the frontier to all but residents and daily workers employed on Gibraltar. | 2 |
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| 1969, May 30 |
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| A new Gibraltar constitution declared the city “part of Her Majesty's dominions” until Parliament should decide otherwise, but in no case contrary to the wishes of the inhabitants. | 3 |
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| June 5 |
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| By further measures of closure, the Spanish government threw 4,800 Spanish workers on Gibraltar out of employment. | 4 |
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| June 27 |
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| The ferry service from Algeciras to Gibraltar was terminated. | 5 |
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| July 30 |
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| Gibraltar elections. Formation of a government of the Integration with Britain Party together with the Independents, with Maj. Robert Peliza as chief minister (Aug. 6). | 6 |
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| Sept. 29 |
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| Spanish naval demonstration off Gibraltar. | 7 |
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