Give a reference to another project/winform in SignalR Hub

I am working on SignalR For Winforms official example. The way they handle UI interaction is using the Program instance/reference as you can see in the code below:

public class MyHub : Hub
{
    public void Send(string name, string message)
    {
        Clients.All.addMessage(name, message);
    }
    public override Task OnConnected()
    {
        //here they used Program....
        Program.MainForm.WriteToConsole("Client connected: " + Context.ConnectionId);
        return base.OnConnected();
    }
    public override Task OnDisconnected(bool graceFull)
    {
        Program.MainForm.WriteToConsole("Client disconnected: " + Context.ConnectionId);
        return base.OnDisconnected(graceFull);
    }
}

My question is, I have created an empty solution in Visual Studio and I added 2 projects, one is a WinForms project, The other is a class library.

Obviously I can not give a Program reference from WinForms project in the MyHub class which is in the class library project since as far as I know the Hub or MyHub class should not be instantiated...its just there for the sake of Reflection.

Is there a way that I can pass a reference to my winforms to the MyHub class either statically or something?