Which preposition to use with retrospections

of Occurrences 11%

The retrospection of this is very pleasant, and I hope we shall never think on each other with less kindness.' Sept. 9.

in Occurrences 2%

Have you got a voice?" "A what?" "Can you sing?" "I really don't know; haven't ever tried, since"a wonderful retrospection in his tones"since I was a little chap in church and wore white robes.

to Occurrences 2%

Yet, after all, if they will destroy a few of the guillotines, open our bastilles, and give us at least the security of servitude, we shall be content to leave these retrospections to posterity, and be thankful that in this our day the wicked sometimes perceive it their interest to do good.

from Occurrences 1%

Her shrill vituperations banished all retrospection from Sylvia's mind.

Which preposition to use with  retrospections