Help sought on early IBM hard drive R&D

I found the Classic Tech Publication website with many interesting articles. I am preparing a historical and architectural evaluation of the Advanced Research Building 025 on the IBM Cottle Road Campus as part of an EIR for the site. The majority of the campus was included in the sale of the IBM Hard Disk Drive Unit to Hitachi, however this building was excluded. It is proposed for demolition and the site to be redeveloped. The building has architectural significance as one of the finest examples of the Modern Industrial style (1940-1985) in San Jose. The question that has not been adequately answered is what research or prototype occurred in this building. It is suggested that the flying head research was done in this building. The building was designed for Reynold Johnson's design team which moved from 99 Almaden in San Jose. Can you direct me to information that would identify the research conducted in this building? Thank you for any assistance you can provide. Bonnie Bamburg