Includes bibliographical references.

Buildings, group extensions and the cohomology of congruence subgroups ; Hecke algebras acting on elliptic cohomology ; Some root invariants and Steenrod operations in rm Ext_A(F_2,F_2) ; Toward homology operations for mapping class groups ; SpanierWhitehead duality and critical points ; Comparing completions of a space at a prime ; Toward the homotopy groups of the higher real heory \rm O_2 ; Skew symmetric bundle maps ; The Adams spectral sequence for Minami's theorem ; Applications of the MinamiWebb formula to splitting classifying spaces ; Brave new worlds in stable homotopy theory ; The stable splitting of _M_12 and related groups ; On the Kervaire invariant problem ; Schur unctions and a KontsevichWitten genus ; Stable splittings of classifying spaces of amalgams of finite groups ; What we still don't know about loop spaces of spheres ; A topological calculus for formal power series ; Notes on the HopkinsMiller theorem ; Commutative Morava homology Hopf algebras ; Northwestern 1997 Algebraic Topology Conference problems Alejandro Adem ; Andrew Baker ; Robert R Bruner ; F R Cohen and Ulrike Tillmann ; Octavian Cornea ; Paul Goerss ; Vassily Gorbounov and Peter Symonds ; Daniel Henry Gottlieb ; WenHsiung Lin and Mark Mahowald ; John Martino and Stewart Priddy ; J P May ; R James Milgram and C Overton ; Norihiko Minami ; Jack Morava ; Daniel JuanPineda ; Douglas C Ravenel ; Nigel Ray ; Charles Rezk ; Hal Sadofsky and W Stephen Wilson ; Mark Mahowald and Stewart Priddy