Here are 5 interesting facts about April 5 in California history:

1. In 1769, Spanish explorer Gaspar de Portolá and his expedition reached San Francisco Bay. They were the first Europeans to see the bay, and they named it Puerto de San Francisco.

2. In 1849, the California State Legislature officially established the town of San Francisco as a city. San Francisco had been founded in 1776 by Spanish colonists, but it was only in 1848, during the California Gold Rush, that it began to grow rapidly.

3. In 1853, San Francisco's first streetcar line, the Market Street Railway, began service. The line was horse-drawn at first, but it was later electrified and expanded into a network of streetcar and cable car lines that became an iconic part of San Francisco's transportation system.

4. In 1927, the first long-distance telephone call was made from San Francisco to New York City. The call was made by then-Mayor James Rolph Jr. to his counterpart in New York, and it marked an important milestone in the development of telecommunications in the United States.

5. In 1955, the trial of the three leaders of the Communist Party of the United States began in San Francisco. The trial was a major event in the early years of the Cold War, and it attracted national attention. The leaders were ultimately convicted of conspiracy to overthrow the government, but their convictions were later overturned on appeal.