I'm not picking on Franco. I'm just stating that as it relates to the OP's mention of 1970's allegations Franco is very unlikely to ever know everything. If he contends he does it's blind faith if you elect to believe him.
https://bwi.forums.rivals.com/threads/just-the-facts-about-joe-paterno.147223/
Fact 15
There are no facts that point to Paterno knowing anything in 1970’s. Joe Paterno had been questioned in his Grand jury testimony if he had any prior to 2001 knowledge of Jerry Sandusky inappropriate sexual conduct.
Q: Other than the incident that Mike McQueary reported to you, do you know in any way, through rumor, direct knowledge or any other fashion, of any other inappropriate sexual conduct by Jerry Sandusky with young boys?
Mr. Paterno: I do not know of anything else that Jerry would be involved in of that nature, no. I do not know of it.
Even the 1976 accuser’s own lawyer Michael Boni said “The headlines of these stories is Paterno knew of Sandusky’s molestation in the ’70s, ’76 or ’77. I’m unaware of direct, irrefutable evidence that that’s the case. Believe me, I’m the last person to defend the guy, but I am the first person to believe in our justice system. And I think you need more than anecdotal evidence or speculative evidence.”
There are 2 claims of abuse in the 1970’s but neither falls into the way Jerry Sandusky was to have victimized the boys
Sandusky victimizing acts according to testimony from his reported victims:
1. Never victimized a female.
2. Never victimized a minor male in the presence of a minor female.
3. Never overtly victimized a minor male in the presence of other minor males.
4. Never overtly victimized a minor male in the (known) presence of other adults.
5. Never victimized a stranger.
6. Never used violence to force himself on a minor male.
7. Never provided victims with drugs or alcohol in the commission of his crimes.
Yet the 70’s claims and previously publicized claims include one or more of these as allegations by claimants who received settlements from Penn State. According to Sandusky's criminal profile, he was an acquaintance offender who slowly groomed his victims to comply with various levels of sexual abuse. Not all victims would comply to the same levels, therefore there is varying testimony about the actual crimes. However, what was consistent among Sandusky's victims was the manner in which he operated or his modus operandi. He met his victims through The Second Mile, took about one year to assess them and choose his targets, then began the grooming and apparently victimizing of them.