  The inner structure of the {\gamma}{\epsilon}-formalisms of Infeld and van
der Waerden admits the occurrence of spin-tensor electromagnetic fields which
bear invariance under the action of the generalized Weyl gauge group. A concise
derivation of the wave equations for such fields is carried out explicitly
along with the construction of a set of torsionless covariant-derivative
expressions. It is emphatically pointed out that the integration of the wave
equations arising herein may under certain circumstances produce significant
insights into the situation concerning the description of some physical
properties of the cosmic microwave background.
