By the 1920s, each state in the United States had passed public laws that stipulated a certain day to be Arbor Day or Arbor and Bird Day observance.

By the late 1920s Potter and her Hill Top farm manager Tom Storey had made a name for their prize-winning Herdwick flock.

By the 1920s, composers of Tin Pan Alley and Broadway used ballad to signify a slow, sentimental tune or love song, often written in a fairly standardized form ( see below ).

By the late 1920s, New York writers other than Fitz Gerald were starting to use " Big Apple " and were using it outside of a horse-racing context.

By the 1920s, the emerging middle and working classes were powerful enough to elect a reformist president, Arturo Alessandri Palma.

By the 1920s, many newspapers had a comics page on which many strips were collected together.

Additional milieu were provided by Chaosium with the release of Dreamlands, a boxed supplement containing additional rules needed for playing within the Lovecraft Dreamlands, a large map and a scenario booklet, and Cthulhu By Gaslight, another boxed set which moved the action from the 1920s to the 1890s.

By the early 1920s, unit operations became an important aspect of chemical engineering at MIT and other US universities, as well as at Imperial College London.

By the late 1920s, Al Capone and the Mob were inspiring not only fear, but piquing mainstream curiosity about the American underworld.

By the 1920s, the U. S. reached what is still its era of greatest-ever output, producing an average of 800 feature films annually, or 82 % of the global total ( Eyman, 1997 ).

By the 1920s Lewis Fry Richardson's interest in weather prediction led him to propose human computers and numerical analysis to model the weather ; to this day, the most powerful computers on Earth are needed to adequately model its weather using the Navier – Stokes equations.

By the 1920s, the idea of an Israelite conquest of Canaan-the story of the book of Joshua-was not supported by the archaeological record.

By the 1920s, Hearst, was the owner of a chain of newspapers from coast to coast.

By the 1920s, the diatonic harmonica had largely reached its modern form.

By the 1920s however the Senate had lost much of its original influence, and hence no sitting senator had been known to have serious aspirations of becoming prime minister whilst remaining in the Senate.

By the 1920s the number of cars had soared to 60, 000.

By the early 1920s, however, the inherent limitations of this type of engine had rendered it obsolete, with the power output increasingly going into overcoming the air-resistance of the spinning engine itself.

By the 1920s psychoanalysts assumed that homosexuality was pathological and that attempts to treat it were appropriate, although psychoanalytic opinion about changing homosexuality was largely pessimistic.

By the late 1920s the resistance movement against colonial rule had gathered widespread support during the mistreatment of the Samoan people by the New Zealand administration.

By the late 1920s, however, those employing only optical and electronic technologies were being explored.

By the late 1920s, economic performance had stabilised, but the overall situation was disappointing, for Britain had clearly fallen behind the United States and other countries as an industrial power.

By the 1920s, however, this boisterous folksiness had diminished.

By the end of the 1920s Corbusier was already an internationally known architect.

By the 1920s, the British Government were seeking a replacement for their book code systems, which had been shown to be insecure, and which proved to be slow and awkward to use in practice.

" By the 1920s, Birmingham was the 19th largest city in the U. S and held more than 30 % of the population of the state.

By June 1979, it was again mated with an external tank and solid rocket boosters ( known as a boilerplate configuration ) and tested in a launch configuration at Kennedy Space Center Launch Pad 39A for a series of fit checks of the facilities there.

By winning the West Virginia primary, Kennedy was able to overcome the belief that Protestant voters would not elect a Catholic candidate to the Presidency and thus sewed up the Democratic nomination for President.

By targeting federal resources to specific geographic areas the Kennedy administration realized that political favors could be bought.

* Seamus Kennedy on his album By Popular Demand

By December 1970 Burke formed eight of his children, including Kyrell " Connie " Burke Groves ; Eleanor A. Burke, who was named after his grandmother who raised him ; Melanie Burke ( born March 1960 ); Gemini Curtis Burke ( born June 3, 1961 ), Solomon Vincent Burke, Jr. ( born 15 October 1961 ); Carolyn Burke ; and John Fitzgerald Kennedy " JFK " Burke into a " kiddie-soul " group, the Sons and Daughters of Solomon, whose entire output consisted of " Think of the Children " ( later known as " Save the Children ") ( K14354 ), recorded on December 10, 1971 ; " Don't Leave Me Now " ( K14233 ) and " A Piece of Clay " ( K14354 ), recorded on 21 December 1970 ; MGM single, " Everybody's Got Fingers " ( written by Solomon Burke, and Melanie Burke and JFK Burke ), recorded on January 16, 1971 ; b / w " Don't Leave Me Now " ( MGM K14233 ), a single " Save the Children " ( 1972 ), and a 1973 album " Kid Power " ( PRD0010, MGS 2994 ), the soundtrack to Kid Power, a cartoon adaptation of Morrie Turner's Wee Pals comic strip that was part of ABC Television's Saturday morning lineup during the 1972 – 73 season, on MGM's Lion subsidiary.

By 1964, he had contracts to guard the Kennedy Space Center and the U. S. Atomic Energy Commission's nuclear test site in Nevada.

By the 1964 election, Moynihan was politically supporting Robert F. Kennedy.

A famous confrontation was the 1952 Senate election in Massachusetts where Irish Catholic John F. Kennedy defeated WASP Henry Cabot Lodge, Jr. By the 1980s, the liberal Rockefeller Republican wing of the party was marginalized, with the dominance of the Southern and Western conservative Republicans.

By waving a black umbrella, Chamberlain's trademark fashion accessory, Witt claims he was protesting the Kennedy family appeasing Adolf Hitler before World War II.

By the time Patrick reached adulthood, both his parents were apparently dead and the family homestead was controlled by his older brother John Kennedy, more than a dozen years Patrick's senior, who was already married and the father of four children.

By 1884, along Bloor Street, several blocks were subdivided as far south as today's Morningside Avenue, then known as Grenadier Road, and as far east as the today's Kennedy Avenue.

By presenting the Commission with its own rulings in a May 29, 1961 petition, Kennedy was able to prompt it to do what it had promised in 1955, five years before the Boynton ruling was handed down, and six years before the Freedom Riders set out to test Boynton across the Deep South.

For instance, in response to the John F. Kennedy assassination theories, one headline declares, " Kennedy Slain By CIA, Mafia, Castro, LBJ, Teamsters, Freemasons " and that he was shot " 129 times from 43 different angles.

By 1994, Pickard had enrolled at the John F. Kennedy School of Government at Harvard University.

By the end of his life in 1998, he was awarded with 5 Tony Awards, 2 Academy Awards, the Kennedy Center Honors ( 1981 ), the National Medal of Arts ( 1988 ), the French Legion of Honor, three Honorary Doctorates, and an Honorary Membership in the American Academy and Institute of Arts and Letters.

By the early 1960s he had been promoted to Head of Public Affairs at BBC Television, and in this role was heavily involved in the news coverage of the assassination of U. S. President John F. Kennedy in 1963 and the subsequent reaction to the events in the UK.

By 1961, U. S. president John F. Kennedy authorized a large public works project, using new high voltage direct current technology from Sweden.

By August, while Britain and the Empire stood alone against Germany, the American Ambassador Joseph P. Kennedy reported from London that a British surrender was " inevitable ".

By the 1950s, he was the ranking minority member of the Rules Committee and worked with its chairman, Howard W. Smith of Virginia to block liberal legisation sought by presidents John F. Kennedy and Lyndon B. Johnson.

By 1970 the book had earned $ 1, 057, 347. 64 in royalties for the Kennedy Library.

By the end of July, Books-A-Million acquired 30 Borders stores, including the Kennedy Mall location.

" Kennedy Grave's Design Lauded By Architects and Art Experts.

By the Washington, D. C. Kennedy Center engagement, " nothing was working ", and Champion changed the staging of scenes that had previously worked.

Foster performed at the 33rd Annual Kennedy Center Honors in a tribute to Jerry Herman, singing " Before the Parade Passes By.