While continuing his company he published his first book, Landscape Architecture: The Shaping of Man's Natural Environment.

The basis of Simonds' firm was centered on parks, recreational facilities, playgrounds, urban area and space, and many large gardens.

"Mellon Square was intended by Simonds to be an oasis, a civic movement, and a gathering space in the midst of downtown office towers.

"[1] The social movement of World War II and the Pittsburgh Renaissance both greatly influenced Simonds' work.

"[3] Simonds created a garden that incorporated an area for education of plants and actual touchable exhibits.

During this time, Simonds changed his focus to large scale developments, allowing Florida's new communities to be options of work.

[3] Pelican Bay became widely appreciated and recognized after receiving the New Community Development Award for Excellence by the Urban Land Institute.

Shortly after being awarded, Simonds released another publication titled, Earthscape: A Manual of Environmental Planning.

Some of his famous works include: The first most important influence was Simonds' father, Guy Wallace, a Presbyterian minister.

Simonds' father helped him to develop a love and appreciation for nature, and the ability to speak to others with great enthusiasm.