[1] Her father was the owner of Peter Pan, a children's swimwear and underwear manufacturer,[5] and later became a leading brand licensing agent in the apparel industry.

[8] Gore was discovered after her uncle gave Joe Glaser a tape of her singing that he forwarded to Irving Green, president of Mercury Records.

[13] Gore recorded composer Marvin Hamlisch's first hit composition, "Sunshine, Lollipops and Rainbows", on May 21, 1963, while "It's My Party" was climbing the charts.

[11] "Sunshine, Lollipops and Rainbows" was released on the LP Lesley Gore Sings of Mixed-Up Hearts, but did not surface as a single until June 1965.

"One by One" was an unreleased track recorded on July 31, 1969, in New York and produced by Paul Leka; it first appeared on the Bear Family five-CD anthology of Gore's Mercury work entitled It's My Party (1994).

Gore had one of the longest sets in the film, performing six songs, including "It's My Party", "You Don't Own Me", and "Judy's Turn to Cry".

[15] Gore performed on two consecutive episodes of the Batman television series (January 19 and 25, 1967), in which she guest-starred as Pussycat, one of Catwoman's minions.

[4] Gore also performed "It's My Party" and "We Know We're in Love" 10 months earlier on the final episode of The Donna Reed Show, which aired on March 19, 1966.

[11] After high school, while continuing to make appearances as a singer, Gore attended Sarah Lawrence College, studying English and American literature.

Her last big hit had been 12 months prior to this time, but Mercury still saw promise in her as an artist and believed that one of her singles would make it, as they had in the past.

Her contract with Mercury ended after the release of "98.6/Lazy Day" and "Wedding Bell Blues" failed to make headway on the charts.

Her first release under the label, "Why Doesn't Love Make Me Happy", was a moderate hit on the Adult Contemporary chart, but none of her other singles would prove to be successful.

The film includes a subplot about a young singer named Kelly Porter, who is based in part on Gore and is played by Bridget Fonda.

"[24] Beginning in 2003, Gore hosted several editions of the PBS television series In the Life, which focused on LGBT issues.

"[4] Gore had been working on a memoir and a Broadway show based on her life[26] when she died of lung cancer on February 16, 2015, at the NYU Langone Medical Center in Manhattan, New York City, at the age of 68.

[29] Her New York Times obituary stated "with songs like 'It's My Party,' 'Judy's Turn to Cry', and the indelibly defiant 1964 single 'You Don't Own Me' — all recorded before she was 18 — Gore made herself the voice of teenaged girls aggrieved by fickle boyfriends, moving quickly from tearful self-pity to fierce self-assertion.

Catalogued by the library and her partner Lois Sasson, it includes family photos, scrapbook pages, annotated music and lyrics, business files, an unfinished memoir, and sound and video recordings.