This peer-reviewed series publishes descriptions of the world's understudied languages, either as full-fledged grammars or as language sketches. The GSWL is an umbrella series currently consisting of the sub-categories for grammars and sketches on:
Mainland and Insular South East Asia (edited by Paul Sidwell and Mathias Jenny),
Romance Languages (edited by Roberta D’Alessandro),
African languages (edited by Gerrit J. Dimmendaal),
Indigenous Languages of Russia (edited by Beáta Wagner-Nagy and Valentin Gusev), and
Papuan Languages (edited by Antoinette Schapper and Lila San Roque).