Single photon data in pp interactions (UA6) are in agreement with the next-to- leading order QCD calculations using a soft gluon structure function (Duke- Owens set I). Similar conclusions have been reached in pp, rr-p, IT+p rr+p collisions by NA24 and WA70, excluding the Duke-owens Duke-Dwens set 11 II structure structure functions. functions. The WA70 and NA24 experiments have observed a 6 standard deviation and a 2.5 standard deviation signal, respectively, for the production of rr-p~11X rr-p~llX at high Pr* PT' The measured cross-sections agree with Bll QCD predictions. The WA70 experiment measures an effective a consistent with the optimized aa of the s 5 s 5 single photon QCD perturbative theory using scale optimization. REFERENCES  P. Aurenche et al., Phys. lett. 1408, 140B, 87 (1984); P. Aurenche et al., Nucl. Phys. 8286, B286, 509 (1987); P. Aurenche et al., Nucl. Phys. 8297, B297, 661 (1988).  A. Bernasconi et al., Phys. lett. 2068, 206B, 163 (1988).  A.P. Contoguris, to appear in Proc. Advanced Research Workshop on QCD Hard Hadronic Processes, St. Croix Croix (Virgin (Virgin Islands), Islands), 1987.  D.W. Duke and J.F. Owens, Phys. Rev. D30, 49 (1984); J.F. Owens, Phys. Rev. D30, 943 (1984).  C. De Marzo et al., Phys. Rev. D36, 8 (1987).  M. Bonesini et al., Z. Phys. C37, 535 (1988); M. Bonesini et al., Z. Phys. C38, 371 (1988).