Mary Johnson taps Dave Mandel to be next executive director Mon, 07/01/2019 - 3:22pm admin DAVE MANDEL WILL become the executive director at Mary Johnson Children's Center. The full text of this article is only available to online subscribers. Are you an online subscriber? Login using the form below. Click here to learn more about our subscription options. If you have a print subscription, you can now add an online subscription at no additional charge! Just email us with your name and mailing address to set it up.