Hard to find softcover book : Frontier League 1963-1988 Basketball Yearbook. It was compiled/written by David Stoodley, DCS Sports Publications. Compiled for the 25th anniversary of Northern New York's High School Frontier Basketball League.

There's a history of the league and then team photos of regular season and playoff champs and yearly stats for each year. Please note there are  Below is the list by year of team photos. 

1962-63
Sandy Creek
Belleville
Lafargeville

1963-64
Cape Vincent
Sandy Creek
Indian River

1964-65
General Brown
Copenhagen
Indian River
Belleville

1965-66
Beaver River
Copenhagen
Belleville

1966-67
Clayton
Adams Center
Belleville

1967-68
Beaver River
Belleville

1968-69
Belleville
Clayton
South Jefferson

1969-70
Belleville
South Jefferson
Carthage

1970-71
Belleville
Carthage
Indian River
South Jefferson
Sandy Creek

1971-72
Beaver River
Immaculate Heart
Belleville
Copenhagen

1972-73
Belleville
Immaculate Heart
Beaver River

1973-74
Carthage
Beaver River
Belleville
Sackets Harbor

1974-75
Beaver River
Belleville

1975-76
South Jefferson
Lyme
Sandy Creek

1976-77
Lyme
Beaver River
South Jefferson

1977-78
Lyme
Beaver River
Carthage

1978-79
Beaver River
Belleville
Lafargeville

1979-1980
Indian River
Carthage
Belleville

1980-81
Lyme
Indian River
Immaculate Heart
General Brown

1981-82
Lyme
Carthage
General Brown
Belleville

1982-83
Immaculate Heart
Sandy Creek
Lyme

1983-84
South Jefferson
General Brown
Lyme
Sackets Harbor

1984-85
South Jefferson
Watertown
General Brown
Beaver River
Lafargeville
Lyme

1985-86
Carthage
General Brown
Copenhagen
LaFargeville

1986-87
South Jefferson
Beaver River
General Brown
Lafargeville
Sackets Harbor

1987-88
Watertown
South Jefferson
Beaver River
Sandy Creek
LaFargeville
Sackets Harbor
Lyme

After this there are team photos of Division III champs from various years that were not featured in earlier sections:
Sackets Harbor 1966
Lyme 1968
Beaver River 1970
Belleville 1981

There are also local advertisements and quotes from people from various schools.

Some cover wear and age including foxing/staining, creasing. The top left corner is damaged - please see photo. Pages and binding are overall good showing expected wear and age.