Letter frequencies (rankings for various languages)

Some examples of letter frequency rankings in English:
  David Copperfield          etaoinhsrdlmuwycfgpbvkxjqz
  Pride and Prejudice        etaoinhsrdlumcywfgbpvkzjxq
  Wuthering Heights          etaonihsrdlumcyfwgpbvkxjqz
  Vanity Fair                etaonhsirdlumcwfgypbvkjqxz
  Gulliver's Travels         etoainshrdlmucfwygpbvkxjqz
  Alice in Wonderland        etaoihnsrdluwgcymfpbkvqxjz
  Inaugural speeches:
  Reagan                     etonarishdlumwcfgpybvkjxzq
  Obama                      etoarnsihdlucwfmgpybvkjqzx
  British National Corpus    etaoinsrhldcumfpgwybvkxjqz
  (90 million words of UK English)
  Brown corpus               etaoinsrhldcumfpgwybvkxjqz
  (one million words of US English)
  Linotype keyboard
            e   s   c   v   x
             t   h   m   b   z
              a   r   f   g   fi
               o   d   w   k   fl
                 i   l   y   q   ff
                  n   u   p   j   ffi
French:       esaitnrulodmcpvéqfgbhjàxèyêzçôùâûîœkwïëüæñ
              (novels, 500000 words; Engwall 1984)
              esaitnrulodcmpévqfbghjàxèyêzâçîùôûïkëw
              (TLF, 70 million words; Brunet 1981)
Modern Greek: αοιετσνηυρπκμλωδγχθφβξζψ
              (Hellenic National Corpus, 33 million words)
Norwegian:    erntsilakodgmvfupbhøjyåæcwzx (q)
              (newspapers, one million words; Heggstad 1982)
Swedish:      eantrsildomkgväfhupåöbcyjxwzéq ...
              (newspapers, one million words; Allen 1970)
Icelandic:    anriestuðlgmkfhvoáþídjóbyæúöpéýcxwzq
              (500000 words; Magnusson, Briem 1991)
Hungarian:    eatlnskomzrigáéydbvhjöfupőócüíúűxw (q)
              (fiction, 500000 words; Furedi, Kelemen 1989)
Slovak:       aoesnitrvlkdmcupzyhjgfb (qwx)
              (disregarding diacritics; 200000 words; Mistrik 1985)
Also, but sometimes from limited samples:
Spanish:      aeosrnlidtucmpbhyígvqójfzéáñxúk (w)
              (novel, 44000 words)
              aeosrnlidutcpmvgbfyhqójíázñéxúkw
              (news, 1700 words)
Polish:       iaeoznscrwymtdpkłujlgębąhżśóćńfźvqx
              (novel, 80000 words)
              aieonzwscrytkdpmjulłgbhąęóżśćńfźxv (q)
              (news, 11000 words)
Finnish:      aintesläkoumhrvpjydögfbcx (qwz)
              (novel, 31000 words)
              enatrsildokgmvfåuphäcböjyxzw (q)
              (news, 1300 words)
Portuguese:   aeosrinmdutlcphvqgfbãzçjáéxóõêôàyíèúò (kw)
              (novel, 27000 words)
              aeosridntmucplvgfbhqãçáéízjóêxàõyúkâôw
              (news, 4500 words)
Dutch:        enairtodsglhkmvjzwupbcféyóxçëïqüèôö
              (novel, 42000 words)
              enatriodslghvkmwubpjczfyxëéó (q)
              (news, 2900 words)
Esperanto:    iaeonslrtkmjudpvgfbĝĉŭcŝhzĵwyx (q)
              (Robinsono Kruso, 21000 words)
              aieonslrtkjudmpvgfbŝĝcŭĉzhĵ (qwxy)
              (5600 words)
Czech:        eonatvsíilmdhcujrkzpáyěbšžéřýčůňúgťfóxď (qw)
              (14000 words)
              oeantivlsrdkupímcházyjbřěéčžýšůgfúňwďóxť (q)
              (news, 2500 words)
Danish:       enadtrslgiohmkvufbpøæjycéxqwèzüàóêçåëä
              (novel, 52000 words)
              erntdasilgomkvfhubpåæjøycwz ... x ... q
              (14000 words)
Hawaiian:     aikoʻenuhlmāpōwēūī (bcdfgjqrstvxyz)
              (12000 words)
Maori:        aiketonuhrmwgp (bcdfjlqsvxyz)
              (2000 words)
Class. Greek: (excluding subscripts)
              αειοντσυηκπρμλωδθγχφξβζψ
              (Thucydides, 23000 words)
              αεοιτνσυρπκληωμδγθχφβξζψ
              (Xenophon, 10000 words)
Russian:      оеанитслвркдмупяьыгбчзжйшхюэщцфъё
              (Anna Karenina, 280000 words)
              оеаинтсвлркдмпуыьягбзчйхжшюцщэфъ (ё)
              (Solzhenitsyn, 86000 words)
              оеаинтсрвлкмдпуыяьгзбчйжхюшцщэфъё
              (news, 25000 words)
              оаинерстъвлкмдпяыугѣібзйьхчжюшцщэфѳ (ёѵ)
              (old orthography, 6000 words)
Turkish:      aeinrlıkdtmsyuobüşzgvhcğçpöfjwxq
              (news, 73000 words)
              aeinlrıdktsymuobüşzgvhpçğcöfjwqx
              (news, 17000 words)
Latin:        eituasrnomcpldqbgvfhxyk (z) (jw)
              (Caesar, 52000 words)
              ietuasnmorcdlpqvbgfhxyz (k) (jw)
              (Seneca, 18000 words)
              eiuatsrnmocldpqbgfvxhyz (k) (jw)
              (Livy, 17000 words)
Italian:      aeiolnrtscdupmvgfbzhqòàùìéèóykwxjô
              (37000 words)
German:       enirsahtduclgmobwfkzvüpäßjöyqx ...
              (Effi Briest, 32000 words)
              enisrthdaulcgmowbfzkvüpäöjyxq
              (Nietzsche, 72000 words)
              enirtsadhlucmgobfwkpzväüößjyxq
              (science, 4600 words)
Welsh:        ayndreiloghwtfuscmbpâôŷŵjïêáqvî (kxz)
              (government document, 13000 words)
Irish:        aihnretscoldgumbáfíéúópvjwykqz (x)
              (news, 5400 words)
              ainhrtesocldgmubíáfépúóyvkwjq (xz)
              (news, 3400 words)
Gaelic:       aihndercsgloutmbàfpòùéìèó (jkqvwxyz)
              (1400 words)