Question: Gordon Ogilvie wrote his 1973 book over a farmer who pioneered in what field?

Context articles: Sybil Dorsett
Richard Pearse
Pentimento (book)
Gordon Ogilvie (priest)
The Institutes of Biblical Law
The People of Kau
Lesbian Nation
My Secret Garden
Gordon Ogilvie
Elena Gaussen

Sybil Dorsett is the title character from the 1973 book, Sybil, the 1976 television miniseries of the same name, played by Sally Field and the 2007 television movie remake, also of the same name, played by Tammy Blanchard.
 Sybil is the fictionalized version of Shirley Ardell Mason, an American psychiatric patient and commercial artist who was reputed to have multiple personality disorder, now called dissociative identity disorder.
Richard William Pearse (3 December 187729 July 1953) was a New Zealand farmer and inventor who performed pioneering experiments in aviation.
Pentimento: A Book of Portraits is a 1973 book by American writer Lillian Hellman.
 It is best known for the controversy over the authenticity of a section about an anti-Nazi activist called "Julia", which was later made into the film "Julia".
 A psychiatrist named Muriel Gardiner later suggested that her life story was fictionalized as Julia.
 Gardiner was a wealthy American who went to medical school in Vienna before World War II and became involved in anti-Fascist resistance there before her return to the US in 1939.
Gordon Ogilvie (born 22 August 1942) is a retired British Anglican priest.
 He was Archdeacon of Nottingham from 1996 until 2006.
The Institutes of Biblical Law is a 1973 book by the philosopher and theologian Rousas John Rushdoony.
 It is the first volume of a three-volume work, also referred to by the same title, which is modeled after John Calvin's "Institutes of the Christian Religion" (1536).
 Together with Rushdoony's other writings, the book is the basis of Christian Reconstructionism.
The People of Kau is the title of the 1976 English-language translation of German film director Leni Riefenstahl's Die Nuba von Kau , an illustrations book published in the same year in Germany.
 The book was an international bestseller and is a follow-up to her earlier successful 1973 book "Die Nuba".
Lesbian Nation: The Feminist Solution is a 1973 book by the radical lesbian feminist author and cultural critic Jill Johnston.
 The book was originally published as a series of essays featured in "The Village Voice" from 1969 to 1972.
My Secret Garden: Women’s Sexual Fantasies is a 1973 book compiled by Nancy Friday, who collected women's fantasies through letters and taped and personal interviews.
 After including a female sexual fantasy in a novel she submitted for publishing, her editor objected, and Friday shelved the novel.
 Later, after other women began writing and talking about sex publicly, Friday began thinking about writing a book about female sexual fantasies, first collecting fantasies from her friends, and then advertising in newspapers and magazines for more.
 She organized these narratives into "rooms", and each is identified by the woman's first name, except for the last chapter, "odd notes", which is presented as the "fleeting thoughts" of many anonymous women.
 The book revealed that women fantasize, just as men do, and that the content of the fantasies can be as transgressive, or not, as men's.
 The book, the first published compilation of women's sexual fantasies, refuted many previously accepted notions of female sexuality.
Gordon Bryant Ogilvie, {'1': ", '2': ", '3': ", '4': "} (born 8 May 1934) is a New Zealand historian and biographer who has written over 20 books, mainly about the people, places and institutions of the Canterbury region.
 He played a considerable role in uncovering the exploits of pioneer aviator Richard Pearse and popularising these for the first time through his 1973 work "The Riddle of Richard Pearse".
 His other major biography, "Denis Glover : His Life" (1999), is the first full account of this significant figure in New Zealand literature.
Elena Gaussen (previously known as Elena Gaussen-Marks) is a London-based portrait painter.
 She was divorced from screenwriter and cryptographer Leo Marks in 2000.
 Gaussen produces portraits and landscapes in a variety of media including pencil sketches.
 She painted a portrait of Helene Hanff during Hanff's 1971 visit to London, as documented in Hanff's 1973 book "The Duchess of Bloomsbury Street".
 Gaussen's "Portrait of the Artist" was included in the 1992 Annual Exhibition by the Royal Society of Portrait Painters.
 Gaussen illustrated a 1999 book release of Marks's famous poem "The Life That I Have".