File 'UScensus2010/R/zzz.R':
  .onLoad calls:
    packageStartupMessage("\n")
    packageStartupMessage(paste("Package ", dscr$Package, ": ", dscr$Title,     "\n", "Version ", dscr$Version, " created on ", dscr$Date,     ".\n", sep = ""))
    packageStartupMessage(paste("Zack Almquist, University of California-Irvine\nne\n",     sep = ""))
    packageStartupMessage("For citation information, type citation(\"UScensus2010\").")
    packageStartupMessage("Type help(package=UScensus2010) to get started.")

See section 'Good practice' in '?.onAttach'.

MSA : MSA.aux: no visible global function definition for 'data'
areaPoly: no visible global function definition for 'slot'
areaPoly: no visible binding for global variable 'slot'
check.state : check.state.aux: no visible global function definition
  for 'data'
choropleth.plot: no visible global function definition for 'title'
city : city.aux: no visible global function definition for 'data'
county : county.aux: no visible global function definition for 'data'
county : county.aux : build.county.shape: no visible global function
  definition for 'data'
demographics : demographics.aux : dem.fun: no visible global function
  definition for 'data'
demographics : demographics.aux: no visible global function definition
  for 'data'
install.blk: no visible global function definition for
  'install.packages'
install.blkgrp: no visible global function definition for
  'install.packages'
install.cdp: no visible global function definition for
  'install.packages'
install.county: no visible global function definition for
  'install.packages'
install.tract: no visible global function definition for
  'install.packages'
nameTofips : nameTofips.aux: no visible global function definition for
  'data'
Undefined global functions or variables:
  data install.packages slot title
Consider adding
  importFrom("graphics", "title")
  importFrom("methods", "slot")
  importFrom("utils", "data", "install.packages")
to your NAMESPACE file (and ensure that your DESCRIPTION Imports field
contains 'methods').