If the person below is not the correct person, could you give us a bit more information about Hattie, such as her approximate birth year, where she lived in the US, and was Beerman her maiden or married name at the time of her arrival.
Hertha Biermann, age 10, departed Bremen on 10 Oct 1912 on the SS Main and arrived at the port of NY on 22 Oct 1912. She was travelling with her parents, Ernst & Wilhelmina, and 3 siblings and headed to her brother, Ernst Bierman in NY, NY.
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Family tree has Hattie's maiden name as GERTRECHER but I cannot find that name on family search.
The person who established the family tree is Richard Dickert. perhaps you should contact him.
The following is from a passenger list for a trip they took in 1956. Includes passport numbers
Dear Ms. Young,
Thank you for posting your request on History Hub!
We searched the National Archives Catalog and located the series Passenger and Crew Lists of Vessels Arriving at New York, New York, 1897-1957 (T715) in the Records of the U.S. Customs Service (Record Group 36) that may contain immigration information for your Hattie Beerman. For access to and/or copies of these records, please contact the National Archives at New York (RE-NY) via email at email@example.com.
Due to the COVID-19 pandemic and pursuant to guidance received from the Office of Management and Budget (OMB), NARA has adjusted its normal operations to balance the need of completing its mission-critical work while also adhering to the recommended social distancing for the safety of NARA staff. As a result of this re-prioritization of activities, you may experience a delay in receiving an initial acknowledgement as well as a substantive response to your reference request from RE-NY. We apologize for this inconvenience and appreciate your understanding and patience.
T715 is available and searchable on Ancestry.com and FamilySearch.org, There may be a fee for using Ancestry. Instead, check for access at your local library as many library systems subscribe to these sites, making them free for their patrons.
You may also wish to search the Passenger Search - The Statue of Liberty & Ellis Island for records of your Hattie Beerman as well as review the NARA publication on Immigration Records. The Castle Garden database may have been merged with the Passenger Search - The Statue of Liberty & Ellis Island search form, which contains 65 million records covering passengers arriving at the Port of New York from 1820 to 1957.
We hope this is helpful. Best of luck with your family research!