Over the course of her esteemed career, Oprah Winfrey has created an unparalleled connection with people around the world.

Her accomplishments as a global media leader and philanthropist have established her as one of the most influential and admired public figures in the world today.

Some of her previously published works include O's Little Guide to Starting Over and Food, Health and Happiness.

Dr Maya Angelou was one of the world's most important writers and activists. Born 4 April 1928, she lived and chronicled an extraordinary life: rising from poverty, violence and racism, she became a renowned author, poet, playwright, civil rights' activist - working with Malcolm X and Martin Luther King - and memoirist.

She wrote and performed a poem, 'On the Pulse of Morning', for President Clinton on his inauguration; she was given the Presidential Medal of Freedom by President Obama and was honoured by more than seventy universities throughout the world.

She first thrilled the world with I Know Why the Caged Bird Sings (1969). This was followed by six volumes of autobiography, the seventh and final volume, Mom & Me & Mom, published in 2013. She wrote three collections of essays; many volumes of poetry, including His Day is Done, a tribute to Nelson Mandela; and two cookbooks.

She had a lifetime appointment as Reynolds Professor of American Studies at Wake Forest University of North Carolina. Dr Angelou died in 2014.