The International School Grounds Alliance (ISGA) is a global network of organizations and professionals dedicated to improving the design and utilization of school grounds in order to enrich children's learning and play.

Playcare, Inc. designs play spaces, provides playground safety audits, and conducts playground safety trainings for Philadelphia, Pennsylvania and surrounding counties. They design play areas that are "safe, sensory rich, stimulating, developmentally appropriate, curriculum-based, accessible, and cost effective," with the majority of their work involving day care and child care centers.

Holgate Toys is known for their colorful, durable, and quality made hardwood children's toys. As a division of Pepperell Braiding Company, all Holgate Toys are manufactured in Pennsylvania, making them one of the few exclusively made-in-America toy companies.

Playgrounds, Their Administration and Operation was published in 1936 by A. S. Barnes and Company. Edited by George D. Butler for the National Recreation Association, the book addresses the concerns of playground administrators and their day to day operations.