PICABIA (Francis). Chi-lo-sa. [Alès : PAB, 1950]. - In-4, 324 x 250 : (9 ff. first blank), illustrated cover. In sheets. Very rare first edition printed at only 100 copies, of this collection of poems and thoughts by Francis Picabia written in Switzerland, presented in an original layout and accompanied by compositions formed by dots and intertwined lines. The book begins with a preface by Jean van Heeckeren who asks at the end: "WHO-LO-SA? Are these poems? Are they aphorisms? Neither one nor the other. It is a book. A book like you have never read before. And this book will not delight the foolish, the incomplete, the enlightened or the blind, that is to say the majority of people. The particularity of this edition is that the cover of the 100 copies is decorated with a different composition each time. Unnumbered copy, enriched with an autograph letter from the author on the title: to Michel Petrin (?) with all my heart // Francis PicabiaSmall tear without gravity at the extremities of the spine, otherwise a copy in good condition . It is preserved in a white cardboard folder, on which the cover design has been reproduced and on which the title, the name of the author, the publisher and the date of publication have been written with letters and numbers cut from a magazine.