Hugh Richmond's article "Shakespeare's Navarre" was originally published in the Huntington Library Quarterly 42.3 (Summer 1979), appearing on pages 193–216. The article was also reprinted in volume 137 of the Shakespearean Criticism series, edited by Michelle Lee. If you do not have access to either of these sources, the easiest place to access the article online is at the researchgate.com website, linked below. You may need to sign up for the website to download the article, but signing up is free of charge and takes only a few minutes. Both researchers and students are eligible for accounts, and it is often a useful source for journal articles that are otherwise hard to locate.
Richmond's article gives an account of the historical sources for Love's Labour's Lost, and particularly documents relating to King Henri IV of France, some of which are in the Huntington Library. Shakespeare's Ferdinand, King of Navarre, is based on Henri, and there were also real-life models for the king's three attendant lords, Berowne, Loungueville and Duraine. Richmond argues that the King and his courtiers, together with several other important figures in late sixteenth-century France were more familiar, and known in more detail, to English audiences than is now generally believed. This explains many of the allusions in Love's Labour's Lost, and also illuminates several other plays written at around the same time which deal with contemporary French politics, including works by Marlowe and Chapman.