Every year a handful of students ask me for information about the Warnock Report of 1978, which looked at the provision on education for children with special educational needs. And every year I've had to point them towards the relatively restricted number of resources that we have on the topic, given that information from this era is rarely available online.
The good news is that the Teacher Training Resource Bank has now put the full text of the Warnock Report online, and it can be accessed by clicking this link. The document is fully searchable, and forms part of a wider information portal on SEN which has recently been launched, and is well worth a look. For further information on other historical reports, try looking at this previous post.