William Croft (born November 13, 1956) is a professor of linguistics at the University of New Mexico, USA. He is an advocate and inventor of radical construction grammar, which among other things uses box-diagrams to compare and contrast the grammatical features of different natural languages. William Croft is a member of Save-the-Redwoods League's Board of Councillors and an ancient tree affecionado. Wikipedia
The definitive Wikipedia entry for William Croft. Wikipedia is the biggest multilingual free-content encyclopedia on the Internet. en.wikipedia.org/wiki/William_Croft_%28linguist%29