The 19th century issues of El Salvador (1867-1900) /
Gallegos, Guillermo F.,author.https://isni.org/isni/0000000507754558
Hahn, Joseph D.,author.https://isni.org/isni/0000000507769995
Royal Philatelic Society (Great Britain),publisher.
"El Salvador philatelic & postal history handbook".
Includes bibliographical references and index.
Postage stamps