The Library and its dedicated volunteers have indexed the 8,000 or so proof of birth records. These documents include:
Other forms of identification that were taken from parents to prove the ages of their children
Children between the ages of 14 and 16 could only work with supervision by the Lawrence Public Schools. The index (PDF) is now available. The list on this post includes only the names and birth dates when available. It is a wonderful collection and the Library very much wants to share its rich detail with the public.
Should you find a name of a relative please contact me. As a hint of what is in the collection I have displayed some images. About 2% of the documents contain photos of the children, sometimes with their families, who came to Lawrence from about 1910 to 1930. For more information about the list you may call our archivist, Louise Sandberg at 978-620-3606 or send her an email.