Amber glass.  Lash's Kidney & Liver Bitters.  The Best Cathartic  and Blood Purifyer.  Few minor marks,  VGC

Both amber.  Dr. J. Hostetters Stomach Bitters.  Both lightly tip stained.

Both aqua glass. -   Burdock Blood Bitters.  Foster Milburn Co, Buffalo NY.  Other - Poor Man's Family Bitters.  Both lightly tip stained.  GC

Small aqua glass S.B.Goff's Herb Bitters, Camden, NJ.  Other is aqua glass Dr. Flint's Quaker Bitters, Providence R.I.  Both lightly tip stained.  Large bottle has chip to back base corner. 

Both amber.  Both Dr. Doyle's Hop Bitters, VGC

Dr. Soule's Hop Bitters.  Hop tm.  Amber glass full of bubbles.  Tiny chip back base corner.  VGC

Both amber.  Brown Chemical Co. Iron Bitters, crack in lip.  Other Prickley Ash Bitters. Both have few  minor marks, VGC

Amber glass pig.  Suffolk Bitters, America's Suffolk Bitters Life Preserver.  VGC

Milk glass.  Hartwig Kantorowicz, Posen, Hamburg, Germany.  Few minor marks.  VGC

Aqua glass.  Dr. Bell's Liver and Kidney Bitters.  Few minor marks, VGC