This 6 inch ruler dates from 1964, served as an advertainment for conferences for the intellectual disability.  I have tried to minimize the use of this outdated & offensive terminology.  Note that this ruler does show some wear/marks from storage & usage over time.  See all photos.

Name changes to this organization:

Canadian Association for R** Children (1958 -1969)

Canadian Association for Community Living (CACL) (1985-2020)

Inclusion Canada 2020-Current

Measure your effectiveness

Attend the Canadian Conference on Mental R**

Toronto Oct 1-3 1964, Saskatoon 1965 ? 1966, Montreal 1967

Acme Made in Canada

Canadian Association for R** Children

87 Bedford Road, Toronto 5, Ontario