Done info and photos are from Find a Grave

https://www.findagrave.com/memorial/86037894/laurence_earl_crosby

From Wikipedia (English):

Larry Crosby (January 3, 1895 – February 7, 1975) was the long-time publicity director of the singer Bing Crosby. He was the eldest of Bing's six siblings. Born Lawrence Crosby 1895 in Tacoma, Washington.

The seven Crosby children were brothers Larry (1895–1975), Everett (1896–1966), Ted (1900–1973), and Harry, (1903–1977, popularly known as Bing Crosby), sisters Catherine (1905–1988) and Mary Rose (1907–1990), and Bob. His parents were English-American bookkeeper Harry Lowe Crosby (1871–1950) and Irish-American Catherine Harrigan (1873–1964) (affectionately known as Kate), the daughter of a builder from County Mayo in Ireland.

Larry managed the annual Bing Crosby National Pro-Amateur, or also called the Crosby Clambake, now called the AT&T Pebble Beach National Pro-Am at Pebble Beach, California, near Monterey.

Starting in 1971 Larry was also the director of the "Prisoners in Exchange for American Construction Enterprise —PEACE" a group seeking better treatment of prisoners of the Vietnam War.

Larry died of cancer in Century city, California at the age of 80.