jeez man that stuff is rough what's even rougher is their 40oz... well this was awhile ago but i remember P&K Liquor in Des Plaines had a selection of St Ides and Mad Dog drinks also if you goto berwyn/cicero area their liquor stores usually stock these types of drinks; i found rarer 40s there like camo and Big Bear as well as the juice type drinks you mentioned but this was maybe 4 or 5 years ago... i guess if you are just wanting to remember the experience it be cool but i wouldn't straight booze on the stuff...
well did some research for you bud and St. Ides is manufactured by Pabst (So is Shlitz, Colt 45 and Private Stock for that matter). im not sure if they still make the drinks you mentioned but here's a distributor list for you:
Distributors for: ILLINOIS
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All products must be purchased from a retail store and cannot be purchased directly from the listed distributors. You may contact a distributor listed below to find out which stores in your area carry our products.
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DISTRIBUTOR CITY ZIP PHONE
ROBERT "CHICK" FRITZ - BELLEVILLE BELLEVILLE 62220 (618) 234-4663
CENTRAL BEVERAGE COMPANY BROADVIEW 60155 (708) 344-6602
REND LAKE BEVERAGE INC CARBONDALE 62901 (618) 549-1322
ELGIN BEVERAGE CO ELGIN 60123 (847) 741-5959
HARTMAN BEVERAGE COMPANY, INC FREEPORT 61032 (815) 233-9916
BLUE RIBBON PRODUCTS JOLIET 60436 (815) 725-5000
F W LOSCH BEV CO INC LAKE VILLA 60046 (847) 265-2288
R J DISTRIBUTING COMPANY PEORIA 61604 (309) 685-2794
ROBERT "CHICK" FRITZ - SPRINGFIELD SPRINGFIELD 62703 (618) 234-4663
SCHAMBERGER BROTHERS, INCORPORATED VILLA PARK 60181 (630) 832-6013
SKOKIE VALLEY BEV CO INC WHEELING 60090 (847) 541-1500
good luck 2 you man, drink responsibly