Money is the medium used to transfer resources on the spot, while liquidity refers to the availability of a medium to transfer resources over time. The monetary search literature initiated by Kiyotaki and Wright (1989) has been successful in providing a solid micro foundation based on trade frictions for the emergence of money as a medium of exchange. On the other hand, a recent growing literature emphasizes the importance of financial frictions and liquidity constraints for the emergence of a medium to transfer resources over time. In particular, Kiyotaki and Moore (2001b) study the effect of limited supply of liquid assets on investment. Although, intuitively, money and liquidity would seem to be linked, these two approaches take them as separate issues.