[6] With Pierre Seghers, Paul Éluard and Jean Lescure, he gathers in 1943 the texts of many poets of the French Resistance, which he published in Les Éditions de Minuit under the title: L’honneur des poètes.
From 1944 onwards, Lachenal, published and edited for Les Trois Collines the series Les Grands Peintres par leurs amis including a collection of poems by Paul Éluard with works by Pablo Picasso 1946 followed by Braque le patron by Jean Paulhan, 1947 Chagall ou l'orage enchanté by Raïssa Maritain 1948, and Fernand Léger et le nouvel espace by Douglas Cooper.
[8] In February 1944, Lachenal obtained, as a member of the Delegation in Lyon, a passport of protection for Gertrud Stein and Alice B. Toklas.
From 1959 till 1997 he directed the ''Internationale Tage'' ("International Days"), a cultural festival with expositions organized for Boehringer Ingelheim.
In 1995, an exhibition was organized in Paris at the Centre Culturel Suisse, depicting his life as an editor and his role as a textual artist during the war.