FIG. 1 is a front elevational view of a folding slide viewer, showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side elevational view thereof;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a bottom plan view thereof;

FIG. 7 is a front perspective view of the device shown in the collapsed condition;

FIG. 8 is a front perspective view of the device shown in the open condition;

FIG. 9 is a rear perspective view thereof.