Rev. Theodore Appel was born on April 30, 1823, in Easton, Pennsylvania.

He was an American author, teacher, and minister. In 1842, he graduated from Marshall College, West Virginia. In 1845, he graduated from the seminary of the Reformed Church in Mercersburg, Pennsylvania, and from 1845 to 1851, he served congregations in Waynesboro, Pennsylvania, and Cavetown, Maryland. In 1851, he became a professor of mathematics and mechanical philosophy at Marshall College until its merger with Franklin College in Lancaster, Pennsylvania in 1853. There he continued in his position until 1877. He was also a pastor of the local church and editor of the "Mercersburg Review" from 1851 to 1857. In 1872, he was honoured with the degree of Doctor of Divinity, conferred by the University of Pennsylvania. In addition to his educational and pastoral work, he delivered, from 1873 to 1888, several series of popular lectures on astronomy. He published several popular works. From 1878 to 1886 he was missionary superintendent and edited the Reformed Missionary Herald, and from 1889 to 1893 he oversaw the editorial department of the Reformed Church Messenger.

In 1854, he married Susan Burton Wolff. He died on September 28, 1907, in Lancaster, Pennsylvania.

Louis Applebaum was born on April 3, 1918, in Toronto, Ontario.

He was a Canadian composer, administrator, and conductor. After studying at the Toronto Conservatory of Music and the University of Toronto, Applebaum went to New York to study composition. By the mid-1940s, he had moved to Hollywood, where his film scores were in great demand, but in 1949, he returned to Canada. He composed approximately 250 film scores for the National Film Board of Canada (NFB) between 1942 and 1960, serving as its music director (1942-1948) and a consultant (1949-1953). He was nominated, along with co-composer Ann Ronell, for an Academy Award for the score of the 1945 war film The Story of G.I. Joe. He won a 1968 Canadian Film Award for his non-feature music score of Athabasca. He won a 1989 Gemini Award for the Best Original Music Score for a Program or Mini-Series for Glory Enough for All. He was the first music director of the Stratford Festival, and in 1955, he established the Stratford Music Festival as an offshoot of the then two-year-old theatre festival. He resigned from his administrative duties at Stratford in 1960, though he continued until 1999 to provide incidental music for festival productions. He was a composer, music director or sound designer for 70 productions over 46 years. His fanfares have been played before every performance at Stratford's main stage since 1953. After resigning from Stratford in 1960, he served as president of Group Four Productions, a documentary and television production company, until 1966. He was a music consultant for CBC Television (1960-1963) and a chairman of the music, opera, and ballet advisory committee for the National Arts Centre (1963-1966). He wrote a 1965 government-commissioned report, which led to the formation of the National Arts Centre Orchestra, as well as a plan for the establishment of a department of music at the University of Ottawa. He served as chairman of a Composers, Authors and Publishers Association of Canada (CAPAC)/Canadian Association of Broadcasters committee for the promotion of Canadian music (1965-1970) and was in charge of member relations for CAPAC (1968–1971), also serving on its board. He served on an advisory arts panel, and was a jury member for the Canada Council (1970-1971) and was a consultant for the St. Lawrence Centre for the Arts (1968-1970). He was executive director of the Ontario Arts Council (1971-1980). Working on behalf of the Government of Canada as chairman of the Federal Cultural Policy Review Committee, he co-authored with Jacques Hébert the influential Applebaum-Hébert Report, the first review of Canadian cultural institutions and federal cultural policy since 1951. He also served as vice president of the Canadian League of Composers. In 1976, he was made an Officer of the Order of Canada. Applebaum was appointed to the Order of Ontario in 1989 and the Companion of the Order of Canada in 1995. In 1997, Applebaum was awarded the inaugural Special Achievement Award at the SOCAN Awards in Toronto. In 1998, the Ontario Arts Foundation established the Louis Applebaum Composers Award.

He died on April 19, 2000, in Toronto, Ontario.

Mark Applebaum was born in 1967 in Chicago, Illinois.

He is an American musician, composer, and Professor of Music Composition and Theory at Stanford University in California. He received his Ph.D. in music composition from the University of California, San Diego. Before Stanford, he taught at UCSD, Mississippi State University, and Carleton College, Minnesota. As a jazz pianist, Applebaum has performed all over the world, including a solo recital in Ouagadougou, Burkina Faso, sponsored by the American Embassy. In 1994, he received the Jazz Prize from the Southern California Jazz Society. Applebaum's solo, chamber, choral, orchestral, operatic, and electro-acoustic work has been performed throughout North and South America, Europe, Australia, Africa, and Asia. His music has been described as mercurial, highly detailed, disciplined, and exacting, with improvisational and whimsical aspects.

Paul A. Appleton, M.D., was born on December 6, 1887, in Providence, Rhode Island.

He was an American surgeon and obstetrician. He graduated from Brown University (B.Ph., 1911) and Harvard University (M.D., 1915). Making a specialty in surgery, he began to practice in Providence, Rhode Island. During World War One, he was commissioned a first lieutenant in the Medical Corps of the Rhode Island National Guard and acted as medical examiner. In 1918, he was appointed instructor of medical surgery at the School of Military Surgery, M.O.T.C., at Camp Greenleaf, Chattanooga, Tennessee. In 1919, he became a member of the surgical staff of the United States Army General Hospital at Fort Oglethorpe, Georgia. Upon returning to civil life, Dr. Appleton resumed his practice in Providence, Rhode Island. He was a Fellow of the American Medical Association, a member of the Providence Medical Society, the Rhode Island Medical Society, the American Association of Surgery, and the New England Obstetrical and Gynecological Society. He contributed to the Boston Medical and Surgical Journal.

In 1920, he married Frances Elizabeth Ricker (1895-1973). He died on December 24, 1948, in Providence, Rhode Island.

William Worthen Appleton was born on November 29, 1845, in Lowell, Middlesex, Massachusetts.

He was an American publisher. He was admitted to Harvard University but did not enter due to ill health. He travelled and studied abroad. In 1825, his grandfather, Daniel Appleton (1785-1849), founded the publishing company D. Appleton & Company. William joined the family company in 1868. He oversaw the editorial department and became the Chairman of the Board of Directors. Like his father, William Henry Appleton (1814-1899), he took an active part in securing international copyright and aided largely in securing the passage of the Copyright Act of 1891. He served as the President of American Publishers' Copyright League.

In 1881, he married Anna Deblois Sargent (1845-1908). He died on January 27, 1924, in New York City, New York.

Donald Sidney Appleyard was born on July 26, 1928, in London, England.

He was an English American urban designer, theorist, author, and educator. He studied architecture and later urban planning at the Massachusetts Institute of Technology. After graduation, he taught at MIT for six years and later at the University of California, Berkeley. He worked on neighbourhood design in Berkeley and Athens and citywide planning in San Francisco and Ciudad Guyana. Appleyard gave lectures at over forty universities and acted in a professional capacity in architecture and planning firms in the United Kingdom, Italy, and the United States. He is the author of several books and papers, e.g., "The view from the road" (1964), "The Conservation of European Cities" (1979) and "Livable Streets" (1981). In 2009, he was named number 57 of Planetizen's Top 100 Thinkers.

He died on September 23, 1982, after a traffic collision in Athens, Greece.

Fulgencio Aquino was born on January 1, 1915, in Sabaneta, Miranda state, Venezuela.

He was a Venezuelan musician, harpist, and popular composer, the author of the song El gato enmochilao.

He died on July 21, 1994, in Caracas, Venezuela.

Joseph Jean-Baptiste Laurent Arban was born on February 28, 1825, in Lyon, France.

He was a French cornetist, conductor, composer, pedagogue and the first famed virtuoso of the cornet à piston or valved cornet. He studied trumpet with François Dauverné at the Paris Conservatoire from 1841 to 1845. After graduating from the Conservatory with honours, Arban began to master the cornet. He was appointed professor of saxhorn at the École Militaire in 1857 and professor of cornet at the Conservatoire in 1869. In 1864, he published his influential Grande méthode complète pour cornet à pistons et de saxhorn. In 1876, at the invitation of Alexander II, Arban conducted concerts in Pavlovsk. He apparently made a phonograph cylinder recording for the Edison Company shortly before his death. Arban's cornet method of 1864 is often referred to as the "Trumpeter's Bible" and is still studied by modern brass players. The Arban Method book is available by various publishers, with Carl Fischer and Alphonse Leduc being the most prominent.

He died on April 8, 1889, in Paris, France.