ERG architectural historians conducted field surveys to update the the 2011 Cultural Landscape Inventory at the National Park Service's (NPS) request for the Mission Espada in San Antonio, TX. Updates corrected and appended the narrative as necessary to reflect recent changes to the landscape. The completed document presented the existing conditions inventory and the site analysis and evaluation, as well as treatment recommendations and proposed improvements developed by Commonwealth Heritage Group landscape architects, subcontracted under ERG Texas Services for the project.

As part of a State Historic Preservation Office (SHPO)-approved mitigation plan for the demolition of several Cold War missile optical instrumentation buildings at White Sands Missile Range (WSMR), in White Sands, New Mexico, that were eligible for listing on the National Register of Historic Places (NRHP), ERG prepared Mitigative Documentation for elevated cinetheodolite “Askania” shelters at the Red Butte Mitigation Instrumentation Site. An integral component of mitigation for the loss of the structures, ERG developed a self-contained interpretive exhibit for the WSMR Museum. The exhibit included three display-quality static panels that addressed topics such as the Red Butte site, early pioneers in instrumentation development at WSMR, and basic concepts of cinetheodolites and tracking telescopes. The panels were designed to mimic 1960s technical manuals and Blue Note album covers of the era with limited, yet complementary colors. In addition, ERG developed an interactive module entitled “Optical Instrumentation at Whites Sands Missile Range” that used newsreel footage, audio from oral history interviews, and slideshows to give the complex topic more depth.