Note in file with page:
Was found at Agincourt Ge[o]Magnetic Observatory, Agincourt Ontario in 1968.
The Geomagnetic Observatory
wasterminated operation because of expansion of the 401, at Midland Ave, just east of Kennedy Rd.
I believe the paper was originated by Jackson who ran the geomagnetic observatory in 1926.
You might contact Miss Douglas or ??? Russell.