John Macco. I think we need some advise on this publication. Perhaps a member in Belgium could track down an Obit for Ludo and see if a family member could be found. They might be able to give us permission to distribute the catalog. There are probably a hundred entries necessary to update his work. He did sell copies of his work and I think it barely covered his costs and postage. There are 112 numbered pages. Most do not have any illustrations.