Who was the first man to climb all of the original Seven Summits (highest mountains of each of the 7 continents)?

In 1985 Richard Bass, a businessman and amateur mountaineer, was the first man to climb all of the original Seven Summits (highest mountains of each of the 7 continents). In only one year, 1983, he climbed six peaks: Aconcagua (South America), Mt. McKinley (now known as Denali, North America), Kilimanjaro (Africa), Mt. Elbrus (Europe), Mt. Vinson (Antarctica) and Mt. Kosciuszko (mainland of Australia). All of these climbs he did together with his companion Frank Wells and different mountain guides. From 1983 Bass and Wells made various guided attempts to climb Mt. Everest (Asia) the highest and most difficult peak in the list. Bass reached the summit of Mt. Everest in a party without Wells, guided by the American professional mountaineer David Breashears, on April 30, 1985. He then co-authored the book Seven Summits, which covered the undertaking.

It should be noted that the first Seven Summits list by Richard Bass chose Mt. Kosciuszko (7310 ft) on the mainland of Australia to represent the continent of Australia. Reinhold Messner later postulated another list replacing Mt. Kosciuszko with Puncak Jaya (16024 ft), also known as Carstensz Pyramid, on the island of New Guinea. The continent of Australia includes the Australian mainland and New Guinea.