"a new pair of shoes" is the object of the preposition because it answers the question 'what did Wilmer buy?"
It can make your paper more appealing to readers, and/or more informative for the readers as well.
Explanation:
Blues for Mister Charlie is James Baldwin's second play, a social commentary drama in three acts. It was first produced and published in 1964.[1] The play is dedicated to the memory of Medgar Evers, his widow and children, and to the memory of the dead children of Birmingham."[2] It is loosely based on the Emmett Till murder that occurred in Money, Mississippi, before the Civil Rights Movement began.