Google
 
"PROOFS OF THE VALIDITY OF ELECTION IN THE 1990 PAPAL CONCLAVE"
Angelo Roncalli was a Heretic prior to his apparent election as John XXIII-II in 1958.

Further John the Baptist Montini was a heretic prior to his apparent election in 1963.

Also Charles (Karol) Wojtyla was in 1978.

A heretic CANNOT become Pope.

Only one Cardinal remained alive on July 16, 1990, a notorious modernist.

Since modernism is a heresy, according to Catholic Church Law, Cardinal Leger had resigned from the Cardinalate.

Documents in regard to the July 16, 1990 Papal Election

It is a matter of Catholic Faith that there will be a Pope until the end of time.  (DZ 2145)

Therefore the Church in this extraordinary case must find a way to elect a Pope.

It is a matter of dogmatic fact that on July 16, 1990, the Catholic Church proceeded to elect a Pope in accord with the spirit of the Doctrines and Laws of the Catholic Church. in accord with the spirit of the Doctrines and Laws
On July 15, all present made the Profession of Faith as required and on July 16, assembled for the election.
Therefore on July 16, 1990, David Bawden was elected Pope Michael