Message on postcard appears to be: “March 24. Here are some of the cute lions I saw today. Tell Mommy I am going to the fairs at San Francisco on April 3 ’til 6th. Having a fine time but not nearly done. Love from Mimi.”
Learn about Gay’s Lion Farm here: https://tropicsofmeta.wordpress.com/2014/12/09/el-montes-wild-past-a-history-of-gays-lion-farm/ .