The text on Belgian heraldry in the albums from 1930 was issued by Koffie Hag/Café Hag in Brussels, Belgium. These albums contained a collection of heraldic stamps or cards, but the specific author of the text within these albums is not explicitly mentioned in the search results. For more detailed information, you might want to explore resources related to Koffie Hag's heraldic albums or contact heraldry experts who might have access to more specific archival information.
For more details, you can visit the Heraldry of the World website.