The LETTER of the King of Poland, To His Excellency the Marquis De Grana, From the Turkish Camp in the Viziers Tent at Vienna, the 13 of September 1683. John the III, by the Grace of God, King of Poland, Great Duke of Lithuania, Russia, Prussia, Masovia, Samogitia, Livonia, Kiovia, Volhinia, Podolia, Podlachia, Smolensco, Severia, and Czernichoven.  
According to the Original Copy Printed in Latin at brussels.  
MOst Illustrious, and wellbeloved. Being called to the Relief of endangered Vienna, with such Military Forces as were called in haste, in how short a tract of time we Mastered first the difficulties of the ways, the distances of Place, the Banks of the Danow, and then the Ridges of Mountains, and the Thichets of the Forest of Vienna; we make no doubt but Fame hath Informed you. We only shall choose to Report to your Illustriousness, what without Injury to the Christians in comm●n, we cannot conceal. God being our Leader, and the good Fortune of the most Serene Princes, Dukes, and Electors our Companion, the Christian Forces, of which the Van was by all committed to us, yesterday, in the present Fields, obtained an extraordinary, and never to be forgotten Victory over the Turks and Tartars. For the Turkish Gran Visier, swelled big with the entire Force of the East, and of the Crim-Tartars, already swallowing in hope, not only what (without Relief) was within three days of its Fate, Vienna; but with that, even all Christendom; was notwithstanding in one days Battle and Onset, entirely Routed and put to Flight. Their Infantry (in the common Style Janissaries) as being a slower Force, and no ways equal in Flight to their Horse, was left behind in the Tents, and abandoned to the Discretion of the Conqueror. The Tents themselves taking up well nigh two Miles in length and breadth taken. Their Canon, all their Powder, and Ammunition, with the Richest of their Spoils, became the just Reward of the Victor's Arms. Vienna freed thus from so hard a Siege, and from such Dangers as had almost proved Fatal, and the Imperial Seat restored to its own Caesar.  
Night put a stop to completing the Victory, the Enemy betaking themselves to a base flight, a Panic Terror Leading the way to Pannonia, darkness befriended them; nevertheless our Light Horse follows them close at the Heels, and of their Stragglers, cut in pieces part, and part they take Prisoners. Moreover, we ourselves, to the Honour of God, are not wanting to Pursue the same Victory, nor will we leave, if it so please the Heavenly Powers to favour us till such time as Winter Quarters shall open to the Christians, in the Enemy's Country. If therefore, the Power of Europe with its experienced Troops on every Side prepared for War, might contend at any time, to dare any thing worthy the Name of Christendom, never could any more seasonable Moment's of Affairs be possibly obtained than the present.  
For if after the Noise of a Victory so fresh in Memory, there should follow but even a slender appearance of War by Sea and Land, it is not to be doubted, but that Greece Groaning under its Tyranny, and even Constantinople itself would shake off the Usurper, and look back to their first Originals. The same we may believe of Epyrus, Macedon, Bosnia, Bulgaria, Dalmatia, Walachia, Moldavia, and the rest of the Usurped Kingdoms and Provinces, as we have no slight Indications of the premises: Perhaps, that constant Vicissitude which is seen in all Humane Affairs, may even now wait the Turkish Empire, that as proceeding from small beginnings, it hath Increased to that Pass, as it Labours under its own Weight; so Fate changing its course, and the Wheel of Variable Fortune turning round, it may Roul Back again to its first beginnings, and now that it hath Rose to a sufficient Height, it may Tumble down with the greater Fall. But leaving all this to the Supreme Disposer of Crowns and Empires, we altogether persuade ourselves from your Illustriousness, that you have that sense of Piety, and a Generous Inclination for the Christian Affairs, as not only to rejoice together with us for these happy Successes, but at some time also to Store them in common with us, and that you will let slip no opportunities for the Mutual Advantages of Christendom: For which, as we Multiply our most Hearty desires, so we wish your Illustriousness the greatest Health and Prosperity of Affairs. Given from the Turkish Camp, in the Viziers Tent at Vienna, the 13th of September, (being the day after that great Victory) in the Year of our Lord, 1683. In the Tenth Year of our Reign.   

LITERAE Regis Poloniae, Ad Excellentissimum Dominum MARCHIONEM De GRANA, Belgii Gubernatorem ex Castris Turcicis, in Tentoriis Veziriis ad Viennam, Die XIII. Septembr. MDCLXXXIII. JOHANNES III. Dei Gratiâ, REX Poloniae, Magnus Dux Lithuaniae, Russiae, Prussiae, Masoviae, Samogitiae, Livoniae, Kioviae, Volhiniae, Podoliae, Podlachiae, Smolensciae, Severiae, Czernichoviaeque.  
ILlustissime, grate Nobis dilecte. Vocati in Subsidium pereclitantis Viennae lectis confestim Militantibus Copiis quam Angusti Temporis spatio prius Incommoda viarum, Distantiam loci, & Ripas Danubii; demum Acumena Montium, & Saltus Sylvarum Viennensium superaverimus, famam distulisse non dubitamus. Nobis vel illud Illustritati vestrae referre placet, quod sine injuria Communi Christianorum reticere non possumus; Deo Auspice, Comite Serenissimorum Principum, Ducum & Electorum fortuna, Christiani Exercitus, quorum Nobis cuncti detulerunt Imperium, die hesterna in Campis presentibus insignem & seculis Memorandam de Turcis & Tartaris reportarunt victoriam. Magnus quippe Turcarum Vesirus integris Orientis & Hanicrimensium Superbus viribus, jam non Viennae duntaxat intra triduum (in subventum fuisset) periturae, sed Universae Christianitatis spem deglutiens acie & praelio unius diei caesus, atque fugatus est; Peditatus (vulgo Janisseri) utpote tardior Militia, aequalique cum Equestribus fugae insufficiens in Castris deserta, & victorum relicta discretioni, Castra ipsa Longitudinem & Latitudinem duorum fere Milliarium exequantia capta Tormenta, atque integra res Tormentaria cum opimis Spoliis in praemium Victricium cessere Armorum. Vienna gravi Obscidione, & extremis liberata Periculis, suoque sedes reddita Caesari, ulteriori Victoriae nox metam posuit, ac turpi fuga sese recipienti Hosti, terrori Pannico in Pannoniam Monstrante viam, umbra fuit Beneficium: Infidet nihilominus tergo illius levior nostra Militia, deficientesque in via partim caedit, partim in Captivitatem abducit. Porro & ipsi in Dei nomine eidem insistimus victoriae, non prius destituri, donec, si ita propitiis visum fuerit Superis, hostili in terra Armis Christianis stativa pateant Hyberna. Tali itaque Rerum Ottomanicarum subsecuta Confusione, si quidpiam aliquando Europae vires ubique promptis accinctae Armis dignum Christiano Nomine audere contendant, nunquam opportuniora rerum Momenta praesentibus nancisci poterunt; si namque ad Clangorem Memoratae victoriae, vel levis Armorum Terra Marique succedat Ostentatio, proculdubio gemens sub Tyrannide Grecia, ac ipsa Constantinopolis perfido recalcitraret Domino, ad suasque respiceret Origenes. Idem de Epgro, Macedoniâ, Bosniâ, Bulgariâ, Dalmatiâ, Valachiâ, Moldaviâ, aliisque Regnis & Provinciis raptis credendum, prout non levia premissorum habemus Indicia: Forte jam & illam continuam Rerum Humanarum Mahometano Imperio superesse Vicissitudinem, ut postquam ab exiguis profectum Initiis eo creverit, ut Magnitudine sua Laboret, rursus vertente Fato, & volubilis Fortunae Rota alio melinante; ad sua devolvatur Principia, & ubi satis in Altum surrexerit, Lapsu graviori ruat: sed his omnibus Supremo Imperiorum, Regnorumque Arbitro relictis, de Illustritate vestra omnino persuasi sumus, habere illam tantum Pietatis, & Generosissimae Mentis in res Christianas, ut non solum foelicibus hisce congaudeat Successibus, sed eos Communes sibi aliquando faciat, nullasque ad mutua Christianitatis Commoda intermittat Occasiones. Quod dum profundissimis ingeminamus desideriis, optimam Illustritati vestrae, cum prospero Rerum Successu precamur valetudinem. Dabatur in Castris Turcicis, in Tentoriis Vesiriis, ad Viennam, Die 13th Mensis Septembris, Anno Domini MDCLXXXIII. Regni Nostri X o. Anno.   

LONDON Printed, and are to be Sold by Walter Davis in Amen-Corner, 1683.