Winterland and Bill Graham were good to Slade. Thyy played many times:

xx Sept 1972        opened for J.Geils band
06 May 1973       Humble Pie headlined, Steeley Dan opened
20 Oct  1973       Brownsville Station & James Gang opened
25 Jan   1974       Brownsville Station opened
27 June 1974       unsure who opened this gig, may have been 10CC
  * after this tour they returned to UK and worked the remainder of 1974 on their film - Slade in Flame
xx Oct 1975         Robin Trower headlined    (this show is available on video, contact me)
16 Apr 1976       10 Yrs After headlined, Frankie Miller opened

I wish I had been able to see them in that era.  I used to belong to their UK fan club for many years and have kept a history of the band archived.  I can always use Slade concert memories and stories.  Please send to Steve     
slade25@hotmail.com