Nova Scotia Archives
Sydenham Howe's Scrapbook
Joseph Howe and His World
Envelope and Ferns from Rockies
The envelope originally held "Illustrated Halifax The Garrison City by the Sea A Souvenir", 1903 but was more recently used to hold "Ferns from the 'Rockies' given me by John Howe of Maitland".
Reference: Sydenham Howe Nova Scotia Archives 1994-272 page 137