 This archival clip can be considered a rarity, since about 98% of the time, any surviving kinescopes or videotapes of the actual telecasts of hockey games from this era usually emanate from CBC's coverage.According to Dick Irvin, Jr.'s book "My 26 Stanley Cups" (Irvin was in the CBC booth with Danny Gallivan during the 1970 Stanley Cup Finals), he was always curious why even the CBC typically uses the CBS replay of the Bobby Orr goal (with Dan Kelly's commentary) instead of Gallivan's call.The explanation that Irvin received was that the CBC's master tape of the game (along with others) was thrown away in order to clear shelf space at the network.