This collection consists of pages scanned from the high school yearbooks or annuals of Kathleen High School in Lakeland, Florida. It is not clear when the high school began publishing a yearbook, but the earliest issue in this collection dates to 1950. The Kathleen High School yearbook was initially titled Interarbores and retained that title until 1964 when it was renamed Trident, a title that it still retains.
Due to the sheer volume of pages, limited resources and concerns about copyright, the Lakeland Public Library has scanned and made available only the "senior" section of each yearbook from 1950 to 2002 inclusive. There are gaps in the collection. The Lakeland Public Library does not have the following years: 1952, 1953, 1956, 1971, 1972, 1973, and 1978, .