Note 4 — II THE MODERN AUTOGRAPH COLLECTOR AND HIS EQUIPMENT
Reading edition
The publisher of Autograph Catalogues invariably adopts the following convenient abbreviations: A. L. S. (autograph letter signed), A. L. (autograph letter unsigned), A. N. S. (autograph note signed), D. S. (document signed). In France L. A. S. indicates an autograph letter signed and P. S. (pièce signée) a signed document.