The Hillside Children's Center Papers contain historical materials such as records of the children cared for by the Rochester Orphan Asylum and later, Hillside Children's Center; original legal documents and by-laws of the institution; correspondence; committee/board minutes and reports (printed annual reports and various other printed materials have been removed and catalogued); financial documents; property maps, floor plans, and blueprints; audio-visual materials such as videotapes and slides; photographs; newspaper clippings; and miscellaneous printed materials and ephemera.

Boxes 1-7 contain meeting minutes and lists of Board of Directors and Executive and Nominating committees. Boxes 8-11 describe the service programs established by the Service Overview Committees to carry out the mission of the organization. Boxes 12 and 13 contain financial reports, including endowment funds, guidelines and manuals for different sections of the organization. Box 14 contains photographs, annual reports, publications, and other miscellaneous ephemera.