WZ Sge O-C variation Dear Colleagues, We have newly put a preliminary O-C diagram of early superhumps and newly appearing superhumps, as identified in [vsnet-alert 6221]. [Please note that: 1) The times were only roughly extracted; please don't cite this figure as the final result ;-) 2) Secondary hump structures are omitted.] This figure corresponds to Figure 1 of Bohusz and Udalski (1979) in IBVS 1583, which first correctly idenified the signal of WZ Sge in 1978 as superhumps. Regards, Taichi Kato VSNET Collaboration team