Hosting html pages created in Dreamweaver on Squarespace site

I'm building out a new site for my client from the ground up though Squarespace. The client has some old Dreamweaver-built exhibit galleries that they want to continue to have access to through the new site.

Is there a way to house these existing DW exhibits within the new Squarespace site I've built?

Example of the DW exhibit: http://americanbeethovensociety.org/exhibits/beethovensvienna/index.html

Currently the DW pages are hosted on webhostinghub.com, and I want to close that account out entirely for the client. Thanks in advance for the help.