During the edit conflict I came to the same conclusion   Can anyone access httpwwwretratosorgaboutphp or httpwwwnpgsieduexhibitcurexhtm   mental note exhibit was at Museo del Barrio among others  Can anyone access the book mentioned here  httpguestgalleryblogspotcomfeedspostsdefault  I suspect that Boufton may be a typo for Boulton a prominent Caracas family  There are sometimes harsh criticisms of his work In los retratos de Bolivar by Alfredo Boufton there is the comment A Meucci was one of Bolivars painters with the least realism His drawing is often imperfect and his brush of a reduced and poor impression and colour blending  Not here but this site could be mined for a new image  httpvenciclopediacomindexphptitleCategorCADaRetratosdeSimCBnBolCADvar  This book might have it if anyone can access it httpyalepressyaleeduyupbooksOnlineCatalogaspcatalog There are so many of them that looking for one author probably isnt a good use of time why not take another PD image from the sites above with a known author   could help if you all are nice to him