Down Your Street Cambridge Past and Present
Volume 2 East Cambridge by Sara Payne
This has about a dozen pages re East Road and includes a photo of a group of men outside the Horse and Jockey public house, taken around 1912.
There is a small mention of the Wheelwright's Arms when the landlord was R.V. Hall
This book can often be found for sale cheaply on ebay (there is a copy on there now) but remember you need Volume 2 (II).
Selina