First performed publicly at age 8 as part of a women's suffrage rally (date approximate)
Appeared in amateur stage productions at age 12 (date approximate)
Moved to Baltimore to join stock company; with company made professional stage acting debut as lady-in-waiting in "Czarina"
Broadway debut in "Night Hostess"
First came to the attention of the American public as Veronica Sims in "These Days" on Broadway
First US stage tour, "Death Takes a Holiday"
Met playwright Philip Barry when she signed on as an understudy for the Broadway production of his successful comedy-drama "Holiday"
Broadway starring role as Antiope, the Amazon queen, in the comedy, "The Warrior Husband", led to film contract
Moved to Hollywood; signed with RKO at $1500/week; originally had no interest in movies and came up with the $1500 figure thinking the studio would consider it ridiculously high; RKO surprised her by agreeing to it
Film acting debut in "A Bill of Divorcement"; also marked first collaboration with director George Cukor
Enjoyed considerable popular and critical success in "Little Women" and "Morning Glory" (for which she won her first Best Actress Oscar)
Her brief, unsuccessful return to Broadway in "The Lake" prompted the famous put-down in a drama review by Dorothy Parker: "Miss Hepburn runs the gamut of emotions from A to B"
Hit picture, "Alice Adams", restored her diminished boxoffice stature momentarily; received Best Actress Oscar nomination
Career mired in temporary slump due to boxoffice failure of several films; labelled 'box office poison' in 1938 by motion picture exhibitors; other stars named included Fred Astaire, Joan Crawford and Marlene Dietrich
Toured the USA in a stage adaptation of Charlotte Bronte's classic novel "Jane Eyre"
Lent to Columbia to play leading role in screen adaptation of Philip Barry's "Holiday"
Bought out RKO contract rather than appear in "Mother Carey's Chickens"; role subsequently was played by Ruby Keeler
Enjoyed resounding Broadway success in the role of Tracy Lord in Barry's "The Philadelphia Story", to which she acquired the movie rights
Sold the film rights to "The Philadelphia Story" to MGM, with whom she signed a contract; stipulated that she reprise role of Tracy Lord; also had a say in choice of co-stars and director; film's popularity rejuvenated her career in movies; earned Best Actress Academy Award nomination
Narrated war-time short subject, "Women in Defense"
First of nine co-starring film appearances opposite Spencer Tracy, "Woman of the Year"; received Oscar nomination as Best Actress
Returned to Broadway to star in Barry's "Without Love" (without heat); insisted the radiators be turned off because they made too much noise and played to freezing audiences in the winter
Starred in the film version of "Without Love" opposite Spencer Tracy
Made one of her best-remembered films opposite Tracy, "Adam's Rib"
Returned to Broadway to play Rosalind in a production of Shakespeare's "As You Like It"
Journeyed to Africa to act opposite Humphrey Bogart in her first film shot largely on location outside the USA, "The African Queen"; earned fifth Best Actress Oscar nomination
Made London stage debut in a production of George Bernard Shaw's "The Millionairess"; also brought the production to Broadway
Last feature film collaboration with director George Cukor, "Pat and Mike", co-starring Spencer Tracy
Oscar-nominated for her turn as a spinster in Venice in "Summertime"
Toured Australia with Britain's Old Vic theatrical company in productions of Shakespeare's "The Merchant of Venice", "The Taming of the Shrew" and "Measure for Measure"
Received another Best Actress Academy Award nomination for "The Rainmaker"
Performed in productions of "The Merchant of Venice" and "Much Ado About Nothing" with the American Shakespeare Festival
Earned eighth Best Actress Oscar nomination for "Suddenly, Last Summer"
Returned to the American Shakespeare Festival to act in productions of "Twelfth Night" and "Antony and Cleopatra"
Returned to films after an absence of three years to co-star in an adaptation of Eugene O'Neill's "Long Day's Journey Into Night" directed by Sidney Lumet; garnered a Best Actress Academy Award nomination
Put career on hold to help Spencer Tracy's wife take care of the ailing actor
Returned to films after a five year absence to co-star with Tracy in their last film together (and the last of his career), "Guess Who's Coming to Dinner"; won second Academy Award as Best Actress
Starred as Eleanor of Aquataine in "The Lion in Winter"; became most nominated actress and first to win three Best Actress Oscars; tie with Barbra Streisand was first and (to date) only instance in that category in the Academy's history
Earliest TV appearances include being one of the interviewees for the NBC documentary TV special "Hollywood: The Selznick Years"
Over 30 years after being named 'box office poison' in a poll of motion picture exhibitors, made the annual top ten list of box office stars conducted each year by Quigley Publications
Returned to Broadway after many years to star in a musical of designer Coco Chanel, "Coco"; received Tony nomination for Best Actress in a Musical
Made TV acting debuts in an ABC adaptation of Tennessee Williams' "The Glass Menagerie"; received first Emmy nomination
Collaborated again with director George Cukor on his first TV-movie, "Love Among the Ruins" (ABC); co-starred with Laurence Olivier; won Emmy Award
Returned to Broadway as star of "A Matter of Gravity"
Portrayed by Tovah Feldshuh in the TV biography "The Amazing Howard Hughes" (CBS)
Last collaboration with George Cukor, the TV-movie remake of "The Corn Is Green" (CBS)
Earned an unprecendented fourth Best Actress Academy Award for "On Golden Pond"; first screen teaming with Henry Fonda
Returned to Broadway to star opposite Dorothy Loudon in "The West Side Waltz"
Last feature film for nine years, "Grace Quigley"
Hosted the PBS documentary tribute, "The Spencer Tracy Legacy: A Tribute by Katharine Hepburn"
Appeared on "Michael Jackson" (1988), an episode of the ongoing series "Motown on Showtime", and the later CBS special "Michael Jackson . . . The Legend Continues" (1992), both documentary and interview tribute specials to the pop singer and songwriter
Hosted and starred in "Katharine Hepburn: All About Me," an autobiographical documentary produced by TNT
Returned to feature films to play a supporting 'guest star' role in "Love Affair"; provided the high point (as Warren Beatty's feisty aunt) of this soulless remake of "An Affair to Remember" (1957)
Last screen performance the NBC-TV movie "One Christmas"