Women of Achievement Plaque to Margaret O W Oliphant

Dedicated to: 

Women of Achievement
Margaret Oliphant

Erected by: 
City of Edinburgh District Council
no longer in situ at the Writers' Museum, Lady Stair's House
Lady Stair's Close, Lawnmarket
Edinburgh, MLN, EH1 2PA
Additional information: 

I have searched for the plaque and cannot find it - I am trying to find out where it may be - I have discussed it with the museum staff who did not know about it, and will follow up the the museum's collection service (I will keep them in the loop if I find the various missing plaques).