A new version of the Classical Map-Pack has been released, it contains 23 maps that have been removed from Counter-Strike, but beloved by all (except de_railroad). The homepage is right here and here are the maps included:
Get it for Windows or Linux, both files range in around 23mb.as_forest, as_riverside, cs_alley, cs_bunker, cs_csiege, cs_desert, cs_docks,
cs_facility, cs_hideout, cs_iraq, cs_mansion, cs_prison, cs_ship, cs_station, cs_tire, cs_wpndepot, cs_zoption, de_fang, de_jeepathon2k, de_railroad, es_frantic, es_jail, es_trinity