The goal of this page is to view how archers would have dressed (or armored) in the Middle Ages, in terms of realistic period portrayals of archers. There are plenty of unrealisticexamples, of course; this list avoids figures dressed more for allegory or myth than for practical archery.
This list should also be useful for viewing period depictions of archery accoutrements. See Archers in Action for a brief but interesting description of medieval combat archery, or these links on medieval archery equipment.) Also notable are portraits by Memling and van der Weyden of men holding arrows. There is an interesting description of medieval Welsh archers at Data Wales.
Tacuinum Sanitatis, (BNF Nouvelle acquisition latine 1673), c. 1390-1400: Spelt, fol. 48v (fancy arrow-quiver on belt); Cranes, fol. 70v; Wind, fol. 101 (note simple black quiver worn on belt)
The French destroy Genoa, Chroniques de France ou de St. Denis (Brit. Lib. Royal 20 C. VII, fol. 19), end of the 14th century
Siege of Jerusalem, Bible historiale (BNF Fr. 10, fol. 412v), beginning of the 15th century
The execution of Odoacer, De casibus (BNF Fr. 226, fol. 234), first quarter of the 15th century; arrows carried in a brown (leather) quiver suspended from the waist
The Death of St Giles from the Garamszentbenedek Altarpiece by Master Thomas de Coloswar, 1427
Lamech kills Cain (fol. 16r) and Esau goes hunting (fol. 42r), Weltchronik (ÖNB 2823), 1463; they carry their bolts in large (fur-covered?) pouches that hang on their belts
A man shooting a crossbow, Wappenbuch (ÖNB 12820, fol. 184r), c. 1484-1486; he carries a large fur-covered belt-pouch, presumably to carry his bolts, as seen above in ÖNB 2823
There myght men see Archers gode, Cast away bothe gowne and hode, The better forto shote
Activities of the social classes; a covered alley where men shoot at butts with crossbows, Imaginacion de vraye noblesse (Brit. Lib. Royal 19 C. VIII, fol. 41), 1496