  A recent high resolution measurement of an absorption line at 110 keV in the
phase-averaged spectrum of A0535+26 (Grove et al. 1994) and the conspicuous
absence of a previously reported harmonic feature at around 50 keV (Kendziorra
et al. 1992, 1994) are indicative of cyclotron scattering in a magnetic field
of about $10^{13}$G. However, controversy has risen over whether a lower field
scenario may account for the alleged absence or weakness of a lower energy
fundamental harmonic feature. This work explores these two alternatives through
the generation of theoretical cyclotron spectra. For lower field models, a
cylindrical geometry of the line forming region and the strong angle dependence
of the cross section for resonant scattering conspire to fill in a first
harmonic at around 57 keV. Higher field models (B $\simeq$ 10.75 TG), however,
yield significantly better fits (${\cal X}^2_{low}/{\cal X}^2_{high} \sim 71$),
thus strengthening the case for a near-critical field ($B_{crit} \simeq 44$
TG). Phase-resolved OSSE spectra are not yet available but would greatly help
in resolving this issue.
