An obituary by Anne Sutherland can be found on <<https://sites.google.com/site/wohdadance/founder|the Western Ontario Highland Dancers' Association>>'s web site. It says

> Janet (Jenny) T. MacLachlan was an artist, historian and pillar of
> resource and knowledge in the Highland and Scottish Country Dance 
> communities in Canada, the United States, and in Scotland. […]
>  Jenny has also published books on the histories of rare and
> lesser-known Scottish Dances collected throughout North America and
> Scotland. She worked hard to enrich the Scottish Dance heritage in
> North America, producing many exceptional highland dancers that have 
> gone on to teaching and judging careers.

Many of the dances in the RSCDS' <<ddpub:Book 24>> were »collected by Jenny MacLachlan«.