If you cannot secure a physical copy or a complete PDF of the Ramachandra Rao volumes, several other highly influential texts regarding Lord Shiva are readily accessible in the public domain or through open-access yoga sites: Siva Kosha Vol 2 | PDF - Scribd
: This is the most reliable source for high-quality, free PDF scans. Search for "Sivakosha" or "Laksmanadeshika" to find various library uploads, often from the Oriental Research Institute collections. Digital Library of India (DLI) siva kosha pdf best
Here is a deep review of the "Siva Kosha" (and related texts) in the context of finding the best PDF versions available. If you cannot secure a physical copy or
Due to copyright laws and the sacred nature of the text, I cannot host a direct download link here. However, I can point you toward : Due to copyright laws and the sacred nature