E.W. Shineman Jr. Birthday Diamond

Constructed by E. W. Shineman, Jr., this in 1990 for his 75th birthday.
This one contains 11 special numbers:

75 - Age on reaching diamond anniversary.
33 (1933) - Year graduated from high school.
4-9-15 - Date of birth.
1878 - Year father was born.
22 - Age when graduated from college
86 (1886) - Birthyear of Father-in-law & mother-in-law
1885 - Year mother was born.
63 & 68 (1963 &1968) - Years of career milestones
24 combinations of 4 numbers sum to 1990.

Canajoharie High School, Canajoharie, NY