PRESERVATION TECH NOTES     HISTORIC GLASS NUMBER 2   Contents Historic Glass Number 2 Repair and Rehabilitation of Historic Sidewalk Vault Lights We hope you will follow the links of this Tech Note in sequence, but here is a table of contents so you can refer to the main headings in Historic Glass Number 2. Introduction Problem and Solution Repair Work and Replacement Panels Reinstallation Evaluation and Project Data Vault Light History and Concrete Vault Lights Sidebar Print Version (HTML) Introduction Print Version Home |  Search |  E-mail |  Technical Preservation Services |  NPS History & Culture