From 1961-65 and then in 1968 United Press International picked All-rookie teams. They didn't pick them from 1968-70 but did resume in 1971.
However, the Oakland Tribune did pick teams from 1969-71 which are the only All-Rookie teams from 1969 and 1970 that were are aware of.
They were not exacting in that they did not define First- or Second-teams and picked both from the NFL and AFL but since they are all we have we thought they were worthy of posting.
Here is the 1969 team—