A 1912 French-language study of the Belgian lace industry by Pierre Verhaegen, published for the Belgian Office du Travail in the series 'Les Industries à domicile'. It covers the history of Belgian lace, the regions where it is made, and descriptions of each type (needle lace, Brussels application, Venetian points, Valenciennes, Binche, Mechelen, Lille, Chantilly, blonde, point d'Angleterre, torchon, duchesse). Most of the book is a socio-economic investigation of lace manufacturers, intermediaries (facteurs and convents), working conditions, apprenticeship schools, wages (with extensive survey tables), the truck system, the crisis in the lace trade and its possible future. Illustrated with many photographic plates of lace pieces and lacemakers, and ends with a bibliography, table of figures and analytical index.

A 1908 French-language study by Pierre Verhaegen on the revival of Venetian needle lace and the lace school at Burano, founded in 1872 by Countess Andriana Marcello after a hard winter left the island's fishing families destitute. It covers the school's origins, organization, staff, apprenticeship and the seven work sections, wages, bookkeeping, mutual aid society, marketing and prices, and the types of lace made (Burano, Venise a reliefs, point de rose, Argentan, Alencon). Photographic plates show lace flounces, collars and panels made at the school, and a closing table gives the number of workers and net sales from 1878 to 1906.