Getting Government (Fed, State, Local) grants for Upgrading

[Jeffrey Allen]

So does anyone know how to find those "grant programs" that would assist or fund the purchase of say new windows for multi-family units?  I listened to a podcast a month ago and learned some things, but I am trying to get more direct information.  I am in central Pennsylvania near Harrisburg, Pa.  I want to improve the tenants quality of life and sustain the buildings for longer use which helps us.