Spiritually, maybe this is a sign that it was time for you to let go that information? Maybe you had already integrated it or moved beyond it; I don’t know. But sometimes we let go of things (AKA “lose”) when they no longer serve a purpose for us and to make room for the good stuff that we’re about to let in, in its place.
That being said, New Release: The Grace of Angels and Saints plus
“St. Anthony, St. Anthony, please come around!
Something’s been lost and needs to be found.”
Also, the Archangel Chamuel is wonderful for helping to find lost things. (They don’t seem to require a poem. 
) That same field (and, of course, Angelic Intercession (Dream Seeds)) will help you contact them.