Active in the Suffolk Preservation Society, Maynard rescued what he could from the disappearing timber structures of Ipswich, modernised the museum records, developed photographic records of Ipswich, maintained annual abstracts of archaeological work in the county, and enormously extended the collections of regional artefacts of all kinds.
Active in the Suffolk Preservation Society, Maynard saved what he could from the vanishing timber structures of Ipswich, updated the museum records, documented photographic images of Ipswich, compiled annual summaries of archaeological work in the county, and significantly expanded the collections of regional artifacts of all kinds.