They have just posted this on their FB page
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"Unsure how to find your ancestors' immigration or naturalization records, or have questions about how to decipher them? Join our LIVE Facebook chat happening tomorrow, July 21, at 12pm MT / 2pm CT / 3pm ET for one hour. Professional genealogists Anne Gillespie Mitchell, Juliana Szucs, and Crista Cowan will be answering questions on our Facebook page. Learn more about our Facebook chat here: http://ancstry.me/1g1Xndm