If you are looking for data sheets, the Internet Archive contains some. Example: https://archive.org/search?query=subject%3Atoshiba+integrated+circuits https:/

If you are looking for data sheets, the Internet Archive contains some. Example: https://archive.org/search?query=subject%3Atoshiba+integrated+circuits https://archive.org/search?query=subject%3Atoshiba+integrate... Also, a Google search followed by "site:archive.org" will filter out everything not coming from archive.org, and "filetype:pdf" will return only pdf files. Sometimes it can be more effective a search for images, so that one can recognize the target book by the cover. That can be especially effective with old titles that were scanned but not OCR'ed where the file name is all one can search for, so that ambiguous part names (for example ICs named like airplane flights) can be easily recognized.