Brown's work remained unpublished and largely unnoticed, however, as his field books and notes remained in his possession until his death, when they were bequeathed to the British Museum (Natural History) in London.
Porén, a obra de Brown permaneceu descoñecida e sen publicar xa que retivo os seus cadernos de campo e notas ata a súa morte, cando foron legados ó Museo Británico de Historia Natural.